Home / 31,132.36-42,968.10-18,564.04

Finding the Fourth Proportional to 31,132.36, 42,968.10 and 18,564.04

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Solution

The fourth proportional to 31,132.36, 42,968.10 and 18,564.04 is: 25,621.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,132.36 : 42,968.10 = 18,564.04 : x
  2. Step 2: Convert to fraction form
    31,132.36/42,968.10 = 18,564.04/x
  3. Step 3: Cross multiply
    31,132.36x = 42,968.10 × 18,564.04
  4. Step 4: Simplify right side
    31,132.36x = 797,661,527.12
  5. Step 5: Solve for x
    x = 797,661,527.12/31,132.36
  6. Step 6: Final answer
    x = 25,621.62

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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.