Home / 31,564.28-43,555.02-18,990.20

Finding the Fourth Proportional to 31,564.28, 43,555.02 and 18,990.20

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Solution

The fourth proportional to 31,564.28, 43,555.02 and 18,990.20 is: 26,204.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,564.28 : 43,555.02 = 18,990.20 : x
  2. Step 2: Convert to fraction form
    31,564.28/43,555.02 = 18,990.20/x
  3. Step 3: Cross multiply
    31,564.28x = 43,555.02 × 18,990.20
  4. Step 4: Simplify right side
    31,564.28x = 827,118,540.80
  5. Step 5: Solve for x
    x = 827,118,540.80/31,564.28
  6. Step 6: Final answer
    x = 26,204.26

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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.