Home / 40,920.52-61,386.84-12,842.88

Finding the Fourth Proportional to 40,920.52, 61,386.84 and 12,842.88

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Solution

The fourth proportional to 40,920.52, 61,386.84 and 12,842.88 is: 19,266.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,920.52 : 61,386.84 = 12,842.88 : x
  2. Step 2: Convert to fraction form
    40,920.52/61,386.84 = 12,842.88/x
  3. Step 3: Cross multiply
    40,920.52x = 61,386.84 × 12,842.88
  4. Step 4: Simplify right side
    40,920.52x = 788,383,819.70
  5. Step 5: Solve for x
    x = 788,383,819.70/40,920.52
  6. Step 6: Final answer
    x = 19,266.22

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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.