Home / 31,447.52-47,170.64-12,722.40

Finding the Fourth Proportional to 31,447.52, 47,170.64 and 12,722.40

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Solution

The fourth proportional to 31,447.52, 47,170.64 and 12,722.40 is: 19,083.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,447.52 : 47,170.64 = 12,722.40 : x
  2. Step 2: Convert to fraction form
    31,447.52/47,170.64 = 12,722.40/x
  3. Step 3: Cross multiply
    31,447.52x = 47,170.64 × 12,722.40
  4. Step 4: Simplify right side
    31,447.52x = 600,123,750.34
  5. Step 5: Solve for x
    x = 600,123,750.34/31,447.52
  6. Step 6: Final answer
    x = 19,083.34

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1.5x scale

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.