Home / 42,759.38-64,139.06-13,177.22

Finding the Fourth Proportional to 42,759.38, 64,139.06 and 13,177.22

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Solution

The fourth proportional to 42,759.38, 64,139.06 and 13,177.22 is: 19,765.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,759.38 : 64,139.06 = 13,177.22 : x
  2. Step 2: Convert to fraction form
    42,759.38/64,139.06 = 13,177.22/x
  3. Step 3: Cross multiply
    42,759.38x = 64,139.06 × 13,177.22
  4. Step 4: Simplify right side
    42,759.38x = 845,174,216.46
  5. Step 5: Solve for x
    x = 845,174,216.46/42,759.38
  6. Step 6: Final answer
    x = 19,765.82

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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.