Home / 12,700.20-19,052.10-4,378.80

Finding the Fourth Proportional to 12,700.20, 19,052.10 and 4,378.80

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Solution

The fourth proportional to 12,700.20, 19,052.10 and 4,378.80 is: 6,568.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,700.20 : 19,052.10 = 4,378.80 : x
  2. Step 2: Convert to fraction form
    12,700.20/19,052.10 = 4,378.80/x
  3. Step 3: Cross multiply
    12,700.20x = 19,052.10 × 4,378.80
  4. Step 4: Simplify right side
    12,700.20x = 83,425,335.48
  5. Step 5: Solve for x
    x = 83,425,335.48/12,700.20
  6. Step 6: Final answer
    x = 6,568.82

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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.