Home / 28,239.80-42,359.22-6,892.72

Finding the Fourth Proportional to 28,239.80, 42,359.22 and 6,892.72

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Solution

The fourth proportional to 28,239.80, 42,359.22 and 6,892.72 is: 10,338.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,239.80 : 42,359.22 = 6,892.72 : x
  2. Step 2: Convert to fraction form
    28,239.80/42,359.22 = 6,892.72/x
  3. Step 3: Cross multiply
    28,239.80x = 42,359.22 × 6,892.72
  4. Step 4: Simplify right side
    28,239.80x = 291,970,136.98
  5. Step 5: Solve for x
    x = 291,970,136.98/28,239.80
  6. Step 6: Final answer
    x = 10,338.96

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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.