Home / 21,125.61-29,152.91-11,565.26

Finding the Fourth Proportional to 21,125.61, 29,152.91 and 11,565.26

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Solution

The fourth proportional to 21,125.61, 29,152.91 and 11,565.26 is: 15,959.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.61 : 29,152.91 = 11,565.26 : x
  2. Step 2: Convert to fraction form
    21,125.61/29,152.91 = 11,565.26/x
  3. Step 3: Cross multiply
    21,125.61x = 29,152.91 × 11,565.26
  4. Step 4: Simplify right side
    21,125.61x = 337,160,780.32
  5. Step 5: Solve for x
    x = 337,160,780.32/21,125.61
  6. Step 6: Final answer
    x = 15,959.81

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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.