Home / 13,490,331.40-20,235,497.10-9,185,659.30

Finding the Fourth Proportional to 13,490,331.40, 20,235,497.10 and 9,185,659.30

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Solution

The fourth proportional to 13,490,331.40, 20,235,497.10 and 9,185,659.30 is: 13,778,488.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490,331.40 : 20,235,497.10 = 9,185,659.30 : x
  2. Step 2: Convert to fraction form
    13,490,331.40/20,235,497.10 = 9,185,659.30/x
  3. Step 3: Cross multiply
    13,490,331.40x = 20,235,497.10 × 9,185,659.30
  4. Step 4: Simplify right side
    13,490,331.40x = 185,876,382,126,738.06
  5. Step 5: Solve for x
    x = 185,876,382,126,738.06/13,490,331.40
  6. Step 6: Final answer
    x = 13,778,488.95

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.