Home / 29,979.66-41,398.56-18,668.55

Finding the Fourth Proportional to 29,979.66, 41,398.56 and 18,668.55

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Solution

The fourth proportional to 29,979.66, 41,398.56 and 18,668.55 is: 25,779.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,979.66 : 41,398.56 = 18,668.55 : x
  2. Step 2: Convert to fraction form
    29,979.66/41,398.56 = 18,668.55/x
  3. Step 3: Cross multiply
    29,979.66x = 41,398.56 × 18,668.55
  4. Step 4: Simplify right side
    29,979.66x = 772,851,087.29
  5. Step 5: Solve for x
    x = 772,851,087.29/29,979.66
  6. Step 6: Final answer
    x = 25,779.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.