Home / 31,455.20-43,403.22-18,023.87

Finding the Fourth Proportional to 31,455.20, 43,403.22 and 18,023.87

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Solution

The fourth proportional to 31,455.20, 43,403.22 and 18,023.87 is: 24,870.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455.20 : 43,403.22 = 18,023.87 : x
  2. Step 2: Convert to fraction form
    31,455.20/43,403.22 = 18,023.87/x
  3. Step 3: Cross multiply
    31,455.20x = 43,403.22 × 18,023.87
  4. Step 4: Simplify right side
    31,455.20x = 782,293,994.86
  5. Step 5: Solve for x
    x = 782,293,994.86/31,455.20
  6. Step 6: Final answer
    x = 24,870.10

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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.