Home / 21,316.72-29,406.25-16,272.18

Finding the Fourth Proportional to 21,316.72, 29,406.25 and 16,272.18

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Solution

The fourth proportional to 21,316.72, 29,406.25 and 16,272.18 is: 22,447.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316.72 : 29,406.25 = 16,272.18 : x
  2. Step 2: Convert to fraction form
    21,316.72/29,406.25 = 16,272.18/x
  3. Step 3: Cross multiply
    21,316.72x = 29,406.25 × 16,272.18
  4. Step 4: Simplify right side
    21,316.72x = 478,503,793.13
  5. Step 5: Solve for x
    x = 478,503,793.13/21,316.72
  6. Step 6: Final answer
    x = 22,447.35

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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.