Home / 22,343.67-30,831.17-13,389.12

Finding the Fourth Proportional to 22,343.67, 30,831.17 and 13,389.12

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Solution

The fourth proportional to 22,343.67, 30,831.17 and 13,389.12 is: 18,475.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,343.67 : 30,831.17 = 13,389.12 : x
  2. Step 2: Convert to fraction form
    22,343.67/30,831.17 = 13,389.12/x
  3. Step 3: Cross multiply
    22,343.67x = 30,831.17 × 13,389.12
  4. Step 4: Simplify right side
    22,343.67x = 412,802,167.92
  5. Step 5: Solve for x
    x = 412,802,167.92/22,343.67
  6. Step 6: Final answer
    x = 18,475.13

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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.