Home / 9,555.72-13,171.59-7,129.14

Finding the Fourth Proportional to 9,555.72, 13,171.59 and 7,129.14

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Solution

The fourth proportional to 9,555.72, 13,171.59 and 7,129.14 is: 9,826.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,555.72 : 13,171.59 = 7,129.14 : x
  2. Step 2: Convert to fraction form
    9,555.72/13,171.59 = 7,129.14/x
  3. Step 3: Cross multiply
    9,555.72x = 13,171.59 × 7,129.14
  4. Step 4: Simplify right side
    9,555.72x = 93,902,109.13
  5. Step 5: Solve for x
    x = 93,902,109.13/9,555.72
  6. Step 6: Final answer
    x = 9,826.80

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.