Home / 13,247.20-19,903.20-9,966.70

Finding the Fourth Proportional to 13,247.20, 19,903.20 and 9,966.70

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Solution

The fourth proportional to 13,247.20, 19,903.20 and 9,966.70 is: 14,974.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,247.20 : 19,903.20 = 9,966.70 : x
  2. Step 2: Convert to fraction form
    13,247.20/19,903.20 = 9,966.70/x
  3. Step 3: Cross multiply
    13,247.20x = 19,903.20 × 9,966.70
  4. Step 4: Simplify right side
    13,247.20x = 198,369,223.44
  5. Step 5: Solve for x
    x = 198,369,223.44/13,247.20
  6. Step 6: Final answer
    x = 14,974.43

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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.