Home / 21,493.20-29,671.68-16,702.40

Finding the Fourth Proportional to 21,493.20, 29,671.68 and 16,702.40

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Solution

The fourth proportional to 21,493.20, 29,671.68 and 16,702.40 is: 23,057.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,493.20 : 29,671.68 = 16,702.40 : x
  2. Step 2: Convert to fraction form
    21,493.20/29,671.68 = 16,702.40/x
  3. Step 3: Cross multiply
    21,493.20x = 29,671.68 × 16,702.40
  4. Step 4: Simplify right side
    21,493.20x = 495,588,268.03
  5. Step 5: Solve for x
    x = 495,588,268.03/21,493.20
  6. Step 6: Final answer
    x = 23,057.91

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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.