Home / 21,565.74-29,760.67-12,134.31

Finding the Fourth Proportional to 21,565.74, 29,760.67 and 12,134.31

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Solution

The fourth proportional to 21,565.74, 29,760.67 and 12,134.31 is: 16,745.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,565.74 : 29,760.67 = 12,134.31 : x
  2. Step 2: Convert to fraction form
    21,565.74/29,760.67 = 12,134.31/x
  3. Step 3: Cross multiply
    21,565.74x = 29,760.67 × 12,134.31
  4. Step 4: Simplify right side
    21,565.74x = 361,125,030.90
  5. Step 5: Solve for x
    x = 361,125,030.90/21,565.74
  6. Step 6: Final answer
    x = 16,745.31

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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.