Home / 28,127.50-42,191.30-11,487.53

Finding the Fourth Proportional to 28,127.50, 42,191.30 and 11,487.53

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Solution

The fourth proportional to 28,127.50, 42,191.30 and 11,487.53 is: 17,231.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,127.50 : 42,191.30 = 11,487.53 : x
  2. Step 2: Convert to fraction form
    28,127.50/42,191.30 = 11,487.53/x
  3. Step 3: Cross multiply
    28,127.50x = 42,191.30 × 11,487.53
  4. Step 4: Simplify right side
    28,127.50x = 484,673,958.69
  5. Step 5: Solve for x
    x = 484,673,958.69/28,127.50
  6. Step 6: Final answer
    x = 17,231.32

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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.