Home / 39,990.08-59,979.48-21,983.92

Finding the Fourth Proportional to 39,990.08, 59,979.48 and 21,983.92

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Solution

The fourth proportional to 39,990.08, 59,979.48 and 21,983.92 is: 32,972.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,990.08 : 59,979.48 = 21,983.92 : x
  2. Step 2: Convert to fraction form
    39,990.08/59,979.48 = 21,983.92/x
  3. Step 3: Cross multiply
    39,990.08x = 59,979.48 × 21,983.92
  4. Step 4: Simplify right side
    39,990.08x = 1,318,584,089.96
  5. Step 5: Solve for x
    x = 1,318,584,089.96/39,990.08
  6. Step 6: Final answer
    x = 32,972.78

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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.