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Finding the Fourth Proportional to 9,938.70, 14,908.05 and 8,529.30

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Solution

The fourth proportional to 9,938.70, 14,908.05 and 8,529.30 is: 12,793.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,938.70 : 14,908.05 = 8,529.30 : x
  2. Step 2: Convert to fraction form
    9,938.70/14,908.05 = 8,529.30/x
  3. Step 3: Cross multiply
    9,938.70x = 14,908.05 × 8,529.30
  4. Step 4: Simplify right side
    9,938.70x = 127,155,230.87
  5. Step 5: Solve for x
    x = 127,155,230.87/9,938.70
  6. Step 6: Final answer
    x = 12,793.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.