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Finding the Fourth Proportional to 9,659.80, 14,489.70 and 9,003.70

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Solution

The fourth proportional to 9,659.80, 14,489.70 and 9,003.70 is: 13,505.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,659.80 : 14,489.70 = 9,003.70 : x
  2. Step 2: Convert to fraction form
    9,659.80/14,489.70 = 9,003.70/x
  3. Step 3: Cross multiply
    9,659.80x = 14,489.70 × 9,003.70
  4. Step 4: Simplify right side
    9,659.80x = 130,460,911.89
  5. Step 5: Solve for x
    x = 130,460,911.89/9,659.80
  6. Step 6: Final answer
    x = 13,505.55

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Half scale
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Double scale
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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.