Home / 15,717.17-21,688.56-9,343.49

Finding the Fourth Proportional to 15,717.17, 21,688.56 and 9,343.49

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Solution

The fourth proportional to 15,717.17, 21,688.56 and 9,343.49 is: 12,893.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,717.17 : 21,688.56 = 9,343.49 : x
  2. Step 2: Convert to fraction form
    15,717.17/21,688.56 = 9,343.49/x
  3. Step 3: Cross multiply
    15,717.17x = 21,688.56 × 9,343.49
  4. Step 4: Simplify right side
    15,717.17x = 202,646,735.03
  5. Step 5: Solve for x
    x = 202,646,735.03/15,717.17
  6. Step 6: Final answer
    x = 12,893.33

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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.