Home / 39,731.60-59,635.80-20,032.40

Finding the Fourth Proportional to 39,731.60, 59,635.80 and 20,032.40

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Solution

The fourth proportional to 39,731.60, 59,635.80 and 20,032.40 is: 30,067.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,731.60 : 59,635.80 = 20,032.40 : x
  2. Step 2: Convert to fraction form
    39,731.60/59,635.80 = 20,032.40/x
  3. Step 3: Cross multiply
    39,731.60x = 59,635.80 × 20,032.40
  4. Step 4: Simplify right side
    39,731.60x = 1,194,648,199.92
  5. Step 5: Solve for x
    x = 1,194,648,199.92/39,731.60
  6. Step 6: Final answer
    x = 30,067.96

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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.