Home / 31,418.68-47,065.74-18,941.98

Finding the Fourth Proportional to 31,418.68, 47,065.74 and 18,941.98

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Solution

The fourth proportional to 31,418.68, 47,065.74 and 18,941.98 is: 28,375.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,418.68 : 47,065.74 = 18,941.98 : x
  2. Step 2: Convert to fraction form
    31,418.68/47,065.74 = 18,941.98/x
  3. Step 3: Cross multiply
    31,418.68x = 47,065.74 × 18,941.98
  4. Step 4: Simplify right side
    31,418.68x = 891,518,305.77
  5. Step 5: Solve for x
    x = 891,518,305.77/31,418.68
  6. Step 6: Final answer
    x = 28,375.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.