Home / 20,712.17-28,599.64-16,884.40

Finding the Fourth Proportional to 20,712.17, 28,599.64 and 16,884.40

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Solution

The fourth proportional to 20,712.17, 28,599.64 and 16,884.40 is: 23,314.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.17 : 28,599.64 = 16,884.40 : x
  2. Step 2: Convert to fraction form
    20,712.17/28,599.64 = 16,884.40/x
  3. Step 3: Cross multiply
    20,712.17x = 28,599.64 × 16,884.40
  4. Step 4: Simplify right side
    20,712.17x = 482,887,761.62
  5. Step 5: Solve for x
    x = 482,887,761.62/20,712.17
  6. Step 6: Final answer
    x = 23,314.20

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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.