Home / 27,431.52-41,140.80-12,631.20

Finding the Fourth Proportional to 27,431.52, 41,140.80 and 12,631.20

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Solution

The fourth proportional to 27,431.52, 41,140.80 and 12,631.20 is: 18,943.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,431.52 : 41,140.80 = 12,631.20 : x
  2. Step 2: Convert to fraction form
    27,431.52/41,140.80 = 12,631.20/x
  3. Step 3: Cross multiply
    27,431.52x = 41,140.80 × 12,631.20
  4. Step 4: Simplify right side
    27,431.52x = 519,657,672.96
  5. Step 5: Solve for x
    x = 519,657,672.96/27,431.52
  6. Step 6: Final answer
    x = 18,943.82

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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.