Home / 31,462.88-47,194.10-12,742.64

Finding the Fourth Proportional to 31,462.88, 47,194.10 and 12,742.64

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Solution

The fourth proportional to 31,462.88, 47,194.10 and 12,742.64 is: 19,113.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,462.88 : 47,194.10 = 12,742.64 : x
  2. Step 2: Convert to fraction form
    31,462.88/47,194.10 = 12,742.64/x
  3. Step 3: Cross multiply
    31,462.88x = 47,194.10 × 12,742.64
  4. Step 4: Simplify right side
    31,462.88x = 601,377,126.74
  5. Step 5: Solve for x
    x = 601,377,126.74/31,462.88
  6. Step 6: Final answer
    x = 19,113.86

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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.