Home / 12,642.12-18,964.08-3,877.20

Finding the Fourth Proportional to 12,642.12, 18,964.08 and 3,877.20

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Solution

The fourth proportional to 12,642.12, 18,964.08 and 3,877.20 is: 5,816.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642.12 : 18,964.08 = 3,877.20 : x
  2. Step 2: Convert to fraction form
    12,642.12/18,964.08 = 3,877.20/x
  3. Step 3: Cross multiply
    12,642.12x = 18,964.08 × 3,877.20
  4. Step 4: Simplify right side
    12,642.12x = 73,527,530.98
  5. Step 5: Solve for x
    x = 73,527,530.98/12,642.12
  6. Step 6: Final answer
    x = 5,816.08

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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.