Home / 21,207.16-29,249.28-14,831.68

Finding the Fourth Proportional to 21,207.16, 29,249.28 and 14,831.68

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Solution

The fourth proportional to 21,207.16, 29,249.28 and 14,831.68 is: 20,456.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,207.16 : 29,249.28 = 14,831.68 : x
  2. Step 2: Convert to fraction form
    21,207.16/29,249.28 = 14,831.68/x
  3. Step 3: Cross multiply
    21,207.16x = 29,249.28 × 14,831.68
  4. Step 4: Simplify right side
    21,207.16x = 433,815,961.19
  5. Step 5: Solve for x
    x = 433,815,961.19/21,207.16
  6. Step 6: Final answer
    x = 20,456.11

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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.