Home / 21,747.76-29,983.35-15,692.92

Finding the Fourth Proportional to 21,747.76, 29,983.35 and 15,692.92

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Solution

The fourth proportional to 21,747.76, 29,983.35 and 15,692.92 is: 21,635.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,747.76 : 29,983.35 = 15,692.92 : x
  2. Step 2: Convert to fraction form
    21,747.76/29,983.35 = 15,692.92/x
  3. Step 3: Cross multiply
    21,747.76x = 29,983.35 × 15,692.92
  4. Step 4: Simplify right side
    21,747.76x = 470,526,312.88
  5. Step 5: Solve for x
    x = 470,526,312.88/21,747.76
  6. Step 6: Final answer
    x = 21,635.62

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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.