Home / 21,557.38-29,748.88-12,125.94

Finding the Fourth Proportional to 21,557.38, 29,748.88 and 12,125.94

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Solution

The fourth proportional to 21,557.38, 29,748.88 and 12,125.94 is: 16,733.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,557.38 : 29,748.88 = 12,125.94 : x
  2. Step 2: Convert to fraction form
    21,557.38/29,748.88 = 12,125.94/x
  3. Step 3: Cross multiply
    21,557.38x = 29,748.88 × 12,125.94
  4. Step 4: Simplify right side
    21,557.38x = 360,733,133.95
  5. Step 5: Solve for x
    x = 360,733,133.95/21,557.38
  6. Step 6: Final answer
    x = 16,733.63

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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.