Home / 31,479.93-43,432.55-17,865.75

Finding the Fourth Proportional to 31,479.93, 43,432.55 and 17,865.75

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Solution

The fourth proportional to 31,479.93, 43,432.55 and 17,865.75 is: 24,649.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,479.93 : 43,432.55 = 17,865.75 : x
  2. Step 2: Convert to fraction form
    31,479.93/43,432.55 = 17,865.75/x
  3. Step 3: Cross multiply
    31,479.93x = 43,432.55 × 17,865.75
  4. Step 4: Simplify right side
    31,479.93x = 775,954,990.83
  5. Step 5: Solve for x
    x = 775,954,990.83/31,479.93
  6. Step 6: Final answer
    x = 24,649.20

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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.