Home / 19,831.28-29,715.36-10,470.96

Finding the Fourth Proportional to 19,831.28, 29,715.36 and 10,470.96

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Solution

The fourth proportional to 19,831.28, 29,715.36 and 10,470.96 is: 15,689.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,831.28 : 29,715.36 = 10,470.96 : x
  2. Step 2: Convert to fraction form
    19,831.28/29,715.36 = 10,470.96/x
  3. Step 3: Cross multiply
    19,831.28x = 29,715.36 × 10,470.96
  4. Step 4: Simplify right side
    19,831.28x = 311,148,345.95
  5. Step 5: Solve for x
    x = 311,148,345.95/19,831.28
  6. Step 6: Final answer
    x = 15,689.78

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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.