Home / 15,395.19-21,245.45-8,321.59

Finding the Fourth Proportional to 15,395.19, 21,245.45 and 8,321.59

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Solution

The fourth proportional to 15,395.19, 21,245.45 and 8,321.59 is: 11,483.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,395.19 : 21,245.45 = 8,321.59 : x
  2. Step 2: Convert to fraction form
    15,395.19/21,245.45 = 8,321.59/x
  3. Step 3: Cross multiply
    15,395.19x = 21,245.45 × 8,321.59
  4. Step 4: Simplify right side
    15,395.19x = 176,795,924.27
  5. Step 5: Solve for x
    x = 176,795,924.27/15,395.19
  6. Step 6: Final answer
    x = 11,483.84

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.