Home / 40,842.20-61,224.40-13,120.76

Finding the Fourth Proportional to 40,842.20, 61,224.40 and 13,120.76

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Solution

The fourth proportional to 40,842.20, 61,224.40 and 13,120.76 is: 19,668.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,842.20 : 61,224.40 = 13,120.76 : x
  2. Step 2: Convert to fraction form
    40,842.20/61,224.40 = 13,120.76/x
  3. Step 3: Cross multiply
    40,842.20x = 61,224.40 × 13,120.76
  4. Step 4: Simplify right side
    40,842.20x = 803,310,658.54
  5. Step 5: Solve for x
    x = 803,310,658.54/40,842.20
  6. Step 6: Final answer
    x = 19,668.64

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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.