Home / 13,114.04-18,097.58-7,145.70

Finding the Fourth Proportional to 13,114.04, 18,097.58 and 7,145.70

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Solution

The fourth proportional to 13,114.04, 18,097.58 and 7,145.70 is: 9,861.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,114.04 : 18,097.58 = 7,145.70 : x
  2. Step 2: Convert to fraction form
    13,114.04/18,097.58 = 7,145.70/x
  3. Step 3: Cross multiply
    13,114.04x = 18,097.58 × 7,145.70
  4. Step 4: Simplify right side
    13,114.04x = 129,319,877.41
  5. Step 5: Solve for x
    x = 129,319,877.41/13,114.04
  6. Step 6: Final answer
    x = 9,861.18

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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.