Home / 13,151.32-18,144.12-7,772.62

Finding the Fourth Proportional to 13,151.32, 18,144.12 and 7,772.62

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Solution

The fourth proportional to 13,151.32, 18,144.12 and 7,772.62 is: 10,723.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.32 : 18,144.12 = 7,772.62 : x
  2. Step 2: Convert to fraction form
    13,151.32/18,144.12 = 7,772.62/x
  3. Step 3: Cross multiply
    13,151.32x = 18,144.12 × 7,772.62
  4. Step 4: Simplify right side
    13,151.32x = 141,027,349.99
  5. Step 5: Solve for x
    x = 141,027,349.99/13,151.32
  6. Step 6: Final answer
    x = 10,723.44

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