Home / 38,979.80-58,431.30-19,261.40

Finding the Fourth Proportional to 38,979.80, 58,431.30 and 19,261.40

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Solution

The fourth proportional to 38,979.80, 58,431.30 and 19,261.40 is: 28,873.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,979.80 : 58,431.30 = 19,261.40 : x
  2. Step 2: Convert to fraction form
    38,979.80/58,431.30 = 19,261.40/x
  3. Step 3: Cross multiply
    38,979.80x = 58,431.30 × 19,261.40
  4. Step 4: Simplify right side
    38,979.80x = 1,125,468,641.82
  5. Step 5: Solve for x
    x = 1,125,468,641.82/38,979.80
  6. Step 6: Final answer
    x = 28,873.13

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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.