Home / 31,479.76-47,227.81-13,945.42

Finding the Fourth Proportional to 31,479.76, 47,227.81 and 13,945.42

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Solution

The fourth proportional to 31,479.76, 47,227.81 and 13,945.42 is: 20,921.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,479.76 : 47,227.81 = 13,945.42 : x
  2. Step 2: Convert to fraction form
    31,479.76/47,227.81 = 13,945.42/x
  3. Step 3: Cross multiply
    31,479.76x = 47,227.81 × 13,945.42
  4. Step 4: Simplify right side
    31,479.76x = 658,611,646.13
  5. Step 5: Solve for x
    x = 658,611,646.13/31,479.76
  6. Step 6: Final answer
    x = 20,921.75

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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.