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Finding the Fourth Proportional to 16,663.50, 22,995.90 and 9,211.50

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Solution

The fourth proportional to 16,663.50, 22,995.90 and 9,211.50 is: 12,712.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,663.50 : 22,995.90 = 9,211.50 : x
  2. Step 2: Convert to fraction form
    16,663.50/22,995.90 = 9,211.50/x
  3. Step 3: Cross multiply
    16,663.50x = 22,995.90 × 9,211.50
  4. Step 4: Simplify right side
    16,663.50x = 211,826,732.85
  5. Step 5: Solve for x
    x = 211,826,732.85/16,663.50
  6. Step 6: Final answer
    x = 12,712.02

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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.