Home / 21,590.17-29,793.77-12,158.53

Finding the Fourth Proportional to 21,590.17, 29,793.77 and 12,158.53

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Solution

The fourth proportional to 21,590.17, 29,793.77 and 12,158.53 is: 16,778.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,590.17 : 29,793.77 = 12,158.53 : x
  2. Step 2: Convert to fraction form
    21,590.17/29,793.77 = 12,158.53/x
  3. Step 3: Cross multiply
    21,590.17x = 29,793.77 × 12,158.53
  4. Step 4: Simplify right side
    21,590.17x = 362,248,385.57
  5. Step 5: Solve for x
    x = 362,248,385.57/21,590.17
  6. Step 6: Final answer
    x = 16,778.39

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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.