Home / 21,068.17-29,073.56-12,115.47

Finding the Fourth Proportional to 21,068.17, 29,073.56 and 12,115.47

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Solution

The fourth proportional to 21,068.17, 29,073.56 and 12,115.47 is: 16,719.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,068.17 : 29,073.56 = 12,115.47 : x
  2. Step 2: Convert to fraction form
    21,068.17/29,073.56 = 12,115.47/x
  3. Step 3: Cross multiply
    21,068.17x = 29,073.56 × 12,115.47
  4. Step 4: Simplify right side
    21,068.17x = 352,239,843.97
  5. Step 5: Solve for x
    x = 352,239,843.97/21,068.17
  6. Step 6: Final answer
    x = 16,719.05

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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.