Home / 12,146.91-18,220.37-9,377.63

Finding the Fourth Proportional to 12,146.91, 18,220.37 and 9,377.63

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Solution

The fourth proportional to 12,146.91, 18,220.37 and 9,377.63 is: 14,066.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,146.91 : 18,220.37 = 9,377.63 : x
  2. Step 2: Convert to fraction form
    12,146.91/18,220.37 = 9,377.63/x
  3. Step 3: Cross multiply
    12,146.91x = 18,220.37 × 9,377.63
  4. Step 4: Simplify right side
    12,146.91x = 170,863,888.32
  5. Step 5: Solve for x
    x = 170,863,888.32/12,146.91
  6. Step 6: Final answer
    x = 14,066.45

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