Home / 31,406.28-43,310.75-20,632.08

Finding the Fourth Proportional to 31,406.28, 43,310.75 and 20,632.08

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Solution

The fourth proportional to 31,406.28, 43,310.75 and 20,632.08 is: 28,452.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,406.28 : 43,310.75 = 20,632.08 : x
  2. Step 2: Convert to fraction form
    31,406.28/43,310.75 = 20,632.08/x
  3. Step 3: Cross multiply
    31,406.28x = 43,310.75 × 20,632.08
  4. Step 4: Simplify right side
    31,406.28x = 893,590,755.70
  5. Step 5: Solve for x
    x = 893,590,755.70/31,406.28
  6. Step 6: Final answer
    x = 28,452.61

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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.