Home / 15,712.71-21,717.89-13,810.02

Finding the Fourth Proportional to 15,712.71, 21,717.89 and 13,810.02

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Solution

The fourth proportional to 15,712.71, 21,717.89 and 13,810.02 is: 19,088.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,712.71 : 21,717.89 = 13,810.02 : x
  2. Step 2: Convert to fraction form
    15,712.71/21,717.89 = 13,810.02/x
  3. Step 3: Cross multiply
    15,712.71x = 21,717.89 × 13,810.02
  4. Step 4: Simplify right side
    15,712.71x = 299,924,495.26
  5. Step 5: Solve for x
    x = 299,924,495.26/15,712.71
  6. Step 6: Final answer
    x = 19,088.02

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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.