Home / 31,756.32-43,820.56-18,331.90

Finding the Fourth Proportional to 31,756.32, 43,820.56 and 18,331.90

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Solution

The fourth proportional to 31,756.32, 43,820.56 and 18,331.90 is: 25,296.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,756.32 : 43,820.56 = 18,331.90 : x
  2. Step 2: Convert to fraction form
    31,756.32/43,820.56 = 18,331.90/x
  3. Step 3: Cross multiply
    31,756.32x = 43,820.56 × 18,331.90
  4. Step 4: Simplify right side
    31,756.32x = 803,313,882.96
  5. Step 5: Solve for x
    x = 803,313,882.96/31,756.32
  6. Step 6: Final answer
    x = 25,296.19

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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.