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Finding the Fourth Proportional to 9,347.60, 13,115.80 and 9,347.60

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Solution

The fourth proportional to 9,347.60, 13,115.80 and 9,347.60 is: 13,115.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,347.60 : 13,115.80 = 9,347.60 : x
  2. Step 2: Convert to fraction form
    9,347.60/13,115.80 = 9,347.60/x
  3. Step 3: Cross multiply
    9,347.60x = 13,115.80 × 9,347.60
  4. Step 4: Simplify right side
    9,347.60x = 122,601,252.08
  5. Step 5: Solve for x
    x = 122,601,252.08/9,347.60
  6. Step 6: Final answer
    x = 13,115.80

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Half scale
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Double scale
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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.