Home / 13,151.02-18,148.38-7,182.68

Finding the Fourth Proportional to 13,151.02, 18,148.38 and 7,182.68

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Solution

The fourth proportional to 13,151.02, 18,148.38 and 7,182.68 is: 9,912.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.02 : 18,148.38 = 7,182.68 : x
  2. Step 2: Convert to fraction form
    13,151.02/18,148.38 = 7,182.68/x
  3. Step 3: Cross multiply
    13,151.02x = 18,148.38 × 7,182.68
  4. Step 4: Simplify right side
    13,151.02x = 130,354,061.71
  5. Step 5: Solve for x
    x = 130,354,061.71/13,151.02
  6. Step 6: Final answer
    x = 9,912.09

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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.