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Finding the Fourth Proportional to 17,876.45, 24,670.95 and 9,921.23

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Solution

The fourth proportional to 17,876.45, 24,670.95 and 9,921.23 is: 13,692.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,876.45 : 24,670.95 = 9,921.23 : x
  2. Step 2: Convert to fraction form
    17,876.45/24,670.95 = 9,921.23/x
  3. Step 3: Cross multiply
    17,876.45x = 24,670.95 × 9,921.23
  4. Step 4: Simplify right side
    17,876.45x = 244,766,323.71
  5. Step 5: Solve for x
    x = 244,766,323.71/17,876.45
  6. Step 6: Final answer
    x = 13,692.11

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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.