Home / 31,401.45-43,327.85-18,658.53

Finding the Fourth Proportional to 31,401.45, 43,327.85 and 18,658.53

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Solution

The fourth proportional to 31,401.45, 43,327.85 and 18,658.53 is: 25,745.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,401.45 : 43,327.85 = 18,658.53 : x
  2. Step 2: Convert to fraction form
    31,401.45/43,327.85 = 18,658.53/x
  3. Step 3: Cross multiply
    31,401.45x = 43,327.85 × 18,658.53
  4. Step 4: Simplify right side
    31,401.45x = 808,433,895.77
  5. Step 5: Solve for x
    x = 808,433,895.77/31,401.45
  6. Step 6: Final answer
    x = 25,745.11

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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.