Home / 28,917.10-43,387.80-15,778.90

Finding the Fourth Proportional to 28,917.10, 43,387.80 and 15,778.90

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Solution

The fourth proportional to 28,917.10, 43,387.80 and 15,778.90 is: 23,674.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,917.10 : 43,387.80 = 15,778.90 : x
  2. Step 2: Convert to fraction form
    28,917.10/43,387.80 = 15,778.90/x
  3. Step 3: Cross multiply
    28,917.10x = 43,387.80 × 15,778.90
  4. Step 4: Simplify right side
    28,917.10x = 684,611,757.42
  5. Step 5: Solve for x
    x = 684,611,757.42/28,917.10
  6. Step 6: Final answer
    x = 23,674.98

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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.