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Finding the Fourth Proportional to 9,491.40, 14,204.70 and 8,713.80

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Solution

The fourth proportional to 9,491.40, 14,204.70 and 8,713.80 is: 13,040.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,491.40 : 14,204.70 = 8,713.80 : x
  2. Step 2: Convert to fraction form
    9,491.40/14,204.70 = 8,713.80/x
  3. Step 3: Cross multiply
    9,491.40x = 14,204.70 × 8,713.80
  4. Step 4: Simplify right side
    9,491.40x = 123,776,914.86
  5. Step 5: Solve for x
    x = 123,776,914.86/9,491.40
  6. Step 6: Final answer
    x = 13,040.95

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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.