Home / 28,253.75-42,381.44-15,766.79

Finding the Fourth Proportional to 28,253.75, 42,381.44 and 15,766.79

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Solution

The fourth proportional to 28,253.75, 42,381.44 and 15,766.79 is: 23,650.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,253.75 : 42,381.44 = 15,766.79 : x
  2. Step 2: Convert to fraction form
    28,253.75/42,381.44 = 15,766.79/x
  3. Step 3: Cross multiply
    28,253.75x = 42,381.44 × 15,766.79
  4. Step 4: Simplify right side
    28,253.75x = 668,218,973.64
  5. Step 5: Solve for x
    x = 668,218,973.64/28,253.75
  6. Step 6: Final answer
    x = 23,650.63

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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.