Home / 42,862.68-64,289.10-11,700.36

Finding the Fourth Proportional to 42,862.68, 64,289.10 and 11,700.36

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Solution

The fourth proportional to 42,862.68, 64,289.10 and 11,700.36 is: 17,549.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,862.68 : 64,289.10 = 11,700.36 : x
  2. Step 2: Convert to fraction form
    42,862.68/64,289.10 = 11,700.36/x
  3. Step 3: Cross multiply
    42,862.68x = 64,289.10 × 11,700.36
  4. Step 4: Simplify right side
    42,862.68x = 752,205,614.08
  5. Step 5: Solve for x
    x = 752,205,614.08/42,862.68
  6. Step 6: Final answer
    x = 17,549.20

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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.