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Finding the Fourth Proportional to 9,352.80, 13,111.20 and 9,352.80

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Solution

The fourth proportional to 9,352.80, 13,111.20 and 9,352.80 is: 13,111.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,352.80 : 13,111.20 = 9,352.80 : x
  2. Step 2: Convert to fraction form
    9,352.80/13,111.20 = 9,352.80/x
  3. Step 3: Cross multiply
    9,352.80x = 13,111.20 × 9,352.80
  4. Step 4: Simplify right side
    9,352.80x = 122,626,431.36
  5. Step 5: Solve for x
    x = 122,626,431.36/9,352.80
  6. Step 6: Final answer
    x = 13,111.20

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Half scale
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Double scale
Find fourth proportional to 9,353.80, 13,112.60 and 9,353.80
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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.