Home / 21,702.95-29,948.85-12,140.99

Finding the Fourth Proportional to 21,702.95, 29,948.85 and 12,140.99

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Solution

The fourth proportional to 21,702.95, 29,948.85 and 12,140.99 is: 16,753.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,702.95 : 29,948.85 = 12,140.99 : x
  2. Step 2: Convert to fraction form
    21,702.95/29,948.85 = 12,140.99/x
  3. Step 3: Cross multiply
    21,702.95x = 29,948.85 × 12,140.99
  4. Step 4: Simplify right side
    21,702.95x = 363,608,650.93
  5. Step 5: Solve for x
    x = 363,608,650.93/21,702.95
  6. Step 6: Final answer
    x = 16,753.88

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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.