Home / 12,572.24-18,858.40-3,807.20

Finding the Fourth Proportional to 12,572.24, 18,858.40 and 3,807.20

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Solution

The fourth proportional to 12,572.24, 18,858.40 and 3,807.20 is: 5,710.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,572.24 : 18,858.40 = 3,807.20 : x
  2. Step 2: Convert to fraction form
    12,572.24/18,858.40 = 3,807.20/x
  3. Step 3: Cross multiply
    12,572.24x = 18,858.40 × 3,807.20
  4. Step 4: Simplify right side
    12,572.24x = 71,797,700.48
  5. Step 5: Solve for x
    x = 71,797,700.48/12,572.24
  6. Step 6: Final answer
    x = 5,710.81

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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.