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Finding the Fourth Proportional to 9,701.20, 14,551.80 and 9,125.20

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Solution

The fourth proportional to 9,701.20, 14,551.80 and 9,125.20 is: 13,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,701.20 : 14,551.80 = 9,125.20 : x
  2. Step 2: Convert to fraction form
    9,701.20/14,551.80 = 9,125.20/x
  3. Step 3: Cross multiply
    9,701.20x = 14,551.80 × 9,125.20
  4. Step 4: Simplify right side
    9,701.20x = 132,788,085.36
  5. Step 5: Solve for x
    x = 132,788,085.36/9,701.20
  6. Step 6: Final answer
    x = 13,687.80

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Similar ratio
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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.