Home / 39,669.60-59,432.40-18,847.20

Finding the Fourth Proportional to 39,669.60, 59,432.40 and 18,847.20

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Solution

The fourth proportional to 39,669.60, 59,432.40 and 18,847.20 is: 28,236.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,669.60 : 59,432.40 = 18,847.20 : x
  2. Step 2: Convert to fraction form
    39,669.60/59,432.40 = 18,847.20/x
  3. Step 3: Cross multiply
    39,669.60x = 59,432.40 × 18,847.20
  4. Step 4: Simplify right side
    39,669.60x = 1,120,134,329.28
  5. Step 5: Solve for x
    x = 1,120,134,329.28/39,669.60
  6. Step 6: Final answer
    x = 28,236.59

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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.