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Finding the Fourth Proportional to 9,530.80, 13,317.20 and 9,530.80

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Solution

The fourth proportional to 9,530.80, 13,317.20 and 9,530.80 is: 13,317.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,530.80 : 13,317.20 = 9,530.80 : x
  2. Step 2: Convert to fraction form
    9,530.80/13,317.20 = 9,530.80/x
  3. Step 3: Cross multiply
    9,530.80x = 13,317.20 × 9,530.80
  4. Step 4: Simplify right side
    9,530.80x = 126,923,569.76
  5. Step 5: Solve for x
    x = 126,923,569.76/9,530.80
  6. Step 6: Final answer
    x = 13,317.20

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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 (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.