Home / 13,141.48-18,135.18-7,173.04

Finding the Fourth Proportional to 13,141.48, 18,135.18 and 7,173.04

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Solution

The fourth proportional to 13,141.48, 18,135.18 and 7,173.04 is: 9,898.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.48 : 18,135.18 = 7,173.04 : x
  2. Step 2: Convert to fraction form
    13,141.48/18,135.18 = 7,173.04/x
  3. Step 3: Cross multiply
    13,141.48x = 18,135.18 × 7,173.04
  4. Step 4: Simplify right side
    13,141.48x = 130,084,371.55
  5. Step 5: Solve for x
    x = 130,084,371.55/13,141.48
  6. Step 6: Final answer
    x = 9,898.76

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