Home / 28,387.56-42,586.47-11,738.55

Finding the Fourth Proportional to 28,387.56, 42,586.47 and 11,738.55

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Solution

The fourth proportional to 28,387.56, 42,586.47 and 11,738.55 is: 17,609.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,387.56 : 42,586.47 = 11,738.55 : x
  2. Step 2: Convert to fraction form
    28,387.56/42,586.47 = 11,738.55/x
  3. Step 3: Cross multiply
    28,387.56x = 42,586.47 × 11,738.55
  4. Step 4: Simplify right side
    28,387.56x = 499,903,407.42
  5. Step 5: Solve for x
    x = 499,903,407.42/28,387.56
  6. Step 6: Final answer
    x = 17,609.95

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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.