Home / 21,347.55-29,454.13-14,187.86

Finding the Fourth Proportional to 21,347.55, 29,454.13 and 14,187.86

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Solution

The fourth proportional to 21,347.55, 29,454.13 and 14,187.86 is: 19,575.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,347.55 : 29,454.13 = 14,187.86 : x
  2. Step 2: Convert to fraction form
    21,347.55/29,454.13 = 14,187.86/x
  3. Step 3: Cross multiply
    21,347.55x = 29,454.13 × 14,187.86
  4. Step 4: Simplify right side
    21,347.55x = 417,891,053.78
  5. Step 5: Solve for x
    x = 417,891,053.78/21,347.55
  6. Step 6: Final answer
    x = 19,575.60

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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.