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Finding the Fourth Proportional to 8,974.95, 13,491.59 and 8,931.21

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Solution

The fourth proportional to 8,974.95, 13,491.59 and 8,931.21 is: 13,425.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,974.95 : 13,491.59 = 8,931.21 : x
  2. Step 2: Convert to fraction form
    8,974.95/13,491.59 = 8,931.21/x
  3. Step 3: Cross multiply
    8,974.95x = 13,491.59 × 8,931.21
  4. Step 4: Simplify right side
    8,974.95x = 120,496,178.87
  5. Step 5: Solve for x
    x = 120,496,178.87/8,974.95
  6. Step 6: Final answer
    x = 13,425.83

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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.