Home / 39,660.40-59,451.18-19,878.58

Finding the Fourth Proportional to 39,660.40, 59,451.18 and 19,878.58

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Solution

The fourth proportional to 39,660.40, 59,451.18 and 19,878.58 is: 29,798.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,660.40 : 59,451.18 = 19,878.58 : x
  2. Step 2: Convert to fraction form
    39,660.40/59,451.18 = 19,878.58/x
  3. Step 3: Cross multiply
    39,660.40x = 59,451.18 × 19,878.58
  4. Step 4: Simplify right side
    39,660.40x = 1,181,804,789.70
  5. Step 5: Solve for x
    x = 1,181,804,789.70/39,660.40
  6. Step 6: Final answer
    x = 29,798.11

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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.