Home / 28,387.79-42,586.85-11,738.78

Finding the Fourth Proportional to 28,387.79, 42,586.85 and 11,738.78

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Solution

The fourth proportional to 28,387.79, 42,586.85 and 11,738.78 is: 17,610.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,387.79 : 42,586.85 = 11,738.78 : x
  2. Step 2: Convert to fraction form
    28,387.79/42,586.85 = 11,738.78/x
  3. Step 3: Cross multiply
    28,387.79x = 42,586.85 × 11,738.78
  4. Step 4: Simplify right side
    28,387.79x = 499,917,663.04
  5. Step 5: Solve for x
    x = 499,917,663.04/28,387.79
  6. Step 6: Final answer
    x = 17,610.31

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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.