Home / 29,999.20-41,386.80-18,660.64

Finding the Fourth Proportional to 29,999.20, 41,386.80 and 18,660.64

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Solution

The fourth proportional to 29,999.20, 41,386.80 and 18,660.64 is: 25,744.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,999.20 : 41,386.80 = 18,660.64 : x
  2. Step 2: Convert to fraction form
    29,999.20/41,386.80 = 18,660.64/x
  3. Step 3: Cross multiply
    29,999.20x = 41,386.80 × 18,660.64
  4. Step 4: Simplify right side
    29,999.20x = 772,304,175.55
  5. Step 5: Solve for x
    x = 772,304,175.55/29,999.20
  6. Step 6: Final answer
    x = 25,744.16

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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.