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Finding the Fourth Proportional to 15,874.74, 21,897.22 and 10,216.86

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Solution

The fourth proportional to 15,874.74, 21,897.22 and 10,216.86 is: 14,092.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,874.74 : 21,897.22 = 10,216.86 : x
  2. Step 2: Convert to fraction form
    15,874.74/21,897.22 = 10,216.86/x
  3. Step 3: Cross multiply
    15,874.74x = 21,897.22 × 10,216.86
  4. Step 4: Simplify right side
    15,874.74x = 223,720,831.13
  5. Step 5: Solve for x
    x = 223,720,831.13/15,874.74
  6. Step 6: Final answer
    x = 14,092.88

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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.