Home / 14,380.80-21,574.28-8,143.76

Finding the Fourth Proportional to 14,380.80, 21,574.28 and 8,143.76

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Solution

The fourth proportional to 14,380.80, 21,574.28 and 8,143.76 is: 12,217.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,380.80 : 21,574.28 = 8,143.76 : x
  2. Step 2: Convert to fraction form
    14,380.80/21,574.28 = 8,143.76/x
  3. Step 3: Cross multiply
    14,380.80x = 21,574.28 × 8,143.76
  4. Step 4: Simplify right side
    14,380.80x = 175,695,758.49
  5. Step 5: Solve for x
    x = 175,695,758.49/14,380.80
  6. Step 6: Final answer
    x = 12,217.38

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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.