Home / 18,748.71-28,132.38-7,658.19

Finding the Fourth Proportional to 18,748.71, 28,132.38 and 7,658.19

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Solution

The fourth proportional to 18,748.71, 28,132.38 and 7,658.19 is: 11,491.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,748.71 : 28,132.38 = 7,658.19 : x
  2. Step 2: Convert to fraction form
    18,748.71/28,132.38 = 7,658.19/x
  3. Step 3: Cross multiply
    18,748.71x = 28,132.38 × 7,658.19
  4. Step 4: Simplify right side
    18,748.71x = 215,443,111.19
  5. Step 5: Solve for x
    x = 215,443,111.19/18,748.71
  6. Step 6: Final answer
    x = 11,491.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.