Home / 31,589.66-43,587.11-18,490.20

Finding the Fourth Proportional to 31,589.66, 43,587.11 and 18,490.20

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Solution

The fourth proportional to 31,589.66, 43,587.11 and 18,490.20 is: 25,512.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,589.66 : 43,587.11 = 18,490.20 : x
  2. Step 2: Convert to fraction form
    31,589.66/43,587.11 = 18,490.20/x
  3. Step 3: Cross multiply
    31,589.66x = 43,587.11 × 18,490.20
  4. Step 4: Simplify right side
    31,589.66x = 805,934,288.87
  5. Step 5: Solve for x
    x = 805,934,288.87/31,589.66
  6. Step 6: Final answer
    x = 25,512.60

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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.