Home / 28,305.85-39,061.62-15,558.76

Finding the Fourth Proportional to 28,305.85, 39,061.62 and 15,558.76

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Solution

The fourth proportional to 28,305.85, 39,061.62 and 15,558.76 is: 21,470.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,305.85 : 39,061.62 = 15,558.76 : x
  2. Step 2: Convert to fraction form
    28,305.85/39,061.62 = 15,558.76/x
  3. Step 3: Cross multiply
    28,305.85x = 39,061.62 × 15,558.76
  4. Step 4: Simplify right side
    28,305.85x = 607,750,199.90
  5. Step 5: Solve for x
    x = 607,750,199.90/28,305.85
  6. Step 6: Final answer
    x = 21,470.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.