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Finding the Fourth Proportional to 9,371.80, 14,057.70 and 8,939.80

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Solution

The fourth proportional to 9,371.80, 14,057.70 and 8,939.80 is: 13,409.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,371.80 : 14,057.70 = 8,939.80 : x
  2. Step 2: Convert to fraction form
    9,371.80/14,057.70 = 8,939.80/x
  3. Step 3: Cross multiply
    9,371.80x = 14,057.70 × 8,939.80
  4. Step 4: Simplify right side
    9,371.80x = 125,673,026.46
  5. Step 5: Solve for x
    x = 125,673,026.46/9,371.80
  6. Step 6: Final answer
    x = 13,409.70

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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.