Home / 20,372.64-28,088.88-16,115.28

Finding the Fourth Proportional to 20,372.64, 28,088.88 and 16,115.28

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Solution

The fourth proportional to 20,372.64, 28,088.88 and 16,115.28 is: 22,219.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,372.64 : 28,088.88 = 16,115.28 : x
  2. Step 2: Convert to fraction form
    20,372.64/28,088.88 = 16,115.28/x
  3. Step 3: Cross multiply
    20,372.64x = 28,088.88 × 16,115.28
  4. Step 4: Simplify right side
    20,372.64x = 452,660,166.09
  5. Step 5: Solve for x
    x = 452,660,166.09/20,372.64
  6. Step 6: Final answer
    x = 22,219.02

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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.