Home / 31,820.60-43,909.85-18,392.72

Finding the Fourth Proportional to 31,820.60, 43,909.85 and 18,392.72

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Solution

The fourth proportional to 31,820.60, 43,909.85 and 18,392.72 is: 25,380.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,820.60 : 43,909.85 = 18,392.72 : x
  2. Step 2: Convert to fraction form
    31,820.60/43,909.85 = 18,392.72/x
  3. Step 3: Cross multiply
    31,820.60x = 43,909.85 × 18,392.72
  4. Step 4: Simplify right side
    31,820.60x = 807,621,264.78
  5. Step 5: Solve for x
    x = 807,621,264.78/31,820.60
  6. Step 6: Final answer
    x = 25,380.46

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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.