Home / 21,562.19-29,755.79-12,130.74

Finding the Fourth Proportional to 21,562.19, 29,755.79 and 12,130.74

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Solution

The fourth proportional to 21,562.19, 29,755.79 and 12,130.74 is: 16,740.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,562.19 : 29,755.79 = 12,130.74 : x
  2. Step 2: Convert to fraction form
    21,562.19/29,755.79 = 12,130.74/x
  3. Step 3: Cross multiply
    21,562.19x = 29,755.79 × 12,130.74
  4. Step 4: Simplify right side
    21,562.19x = 360,959,691.33
  5. Step 5: Solve for x
    x = 360,959,691.33/21,562.19
  6. Step 6: Final answer
    x = 16,740.40

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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.