Home / 12,988.60-19,491.13-7,452.76

Finding the Fourth Proportional to 12,988.60, 19,491.13 and 7,452.76

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Solution

The fourth proportional to 12,988.60, 19,491.13 and 7,452.76 is: 11,183.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988.60 : 19,491.13 = 7,452.76 : x
  2. Step 2: Convert to fraction form
    12,988.60/19,491.13 = 7,452.76/x
  3. Step 3: Cross multiply
    12,988.60x = 19,491.13 × 7,452.76
  4. Step 4: Simplify right side
    12,988.60x = 145,262,711.15
  5. Step 5: Solve for x
    x = 145,262,711.15/12,988.60
  6. Step 6: Final answer
    x = 11,183.86

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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.