Home / 39,789.58-59,672.18-13,130.66

Finding the Fourth Proportional to 39,789.58, 59,672.18 and 13,130.66

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Solution

The fourth proportional to 39,789.58, 59,672.18 and 13,130.66 is: 19,691.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,789.58 : 59,672.18 = 13,130.66 : x
  2. Step 2: Convert to fraction form
    39,789.58/59,672.18 = 13,130.66/x
  3. Step 3: Cross multiply
    39,789.58x = 59,672.18 × 13,130.66
  4. Step 4: Simplify right side
    39,789.58x = 783,535,107.04
  5. Step 5: Solve for x
    x = 783,535,107.04/39,789.58
  6. Step 6: Final answer
    x = 19,691.97

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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.