Home / 21,650.16-29,874.02-13,147.86

Finding the Fourth Proportional to 21,650.16, 29,874.02 and 13,147.86

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Solution

The fourth proportional to 21,650.16, 29,874.02 and 13,147.86 is: 18,142.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,650.16 : 29,874.02 = 13,147.86 : x
  2. Step 2: Convert to fraction form
    21,650.16/29,874.02 = 13,147.86/x
  3. Step 3: Cross multiply
    21,650.16x = 29,874.02 × 13,147.86
  4. Step 4: Simplify right side
    21,650.16x = 392,779,432.60
  5. Step 5: Solve for x
    x = 392,779,432.60/21,650.16
  6. Step 6: Final answer
    x = 18,142.10

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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.