Home / 20,652.81-28,473.42-16,418.13

Finding the Fourth Proportional to 20,652.81, 28,473.42 and 16,418.13

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Solution

The fourth proportional to 20,652.81, 28,473.42 and 16,418.13 is: 22,635.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,652.81 : 28,473.42 = 16,418.13 : x
  2. Step 2: Convert to fraction form
    20,652.81/28,473.42 = 16,418.13/x
  3. Step 3: Cross multiply
    20,652.81x = 28,473.42 × 16,418.13
  4. Step 4: Simplify right side
    20,652.81x = 467,480,311.10
  5. Step 5: Solve for x
    x = 467,480,311.10/20,652.81
  6. Step 6: Final answer
    x = 22,635.19

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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.