Home / 31,400.56-47,140.82-20,353.47

Finding the Fourth Proportional to 31,400.56, 47,140.82 and 20,353.47

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Solution

The fourth proportional to 31,400.56, 47,140.82 and 20,353.47 is: 30,556.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,400.56 : 47,140.82 = 20,353.47 : x
  2. Step 2: Convert to fraction form
    31,400.56/47,140.82 = 20,353.47/x
  3. Step 3: Cross multiply
    31,400.56x = 47,140.82 × 20,353.47
  4. Step 4: Simplify right side
    31,400.56x = 959,479,265.65
  5. Step 5: Solve for x
    x = 959,479,265.65/31,400.56
  6. Step 6: Final answer
    x = 30,556.12

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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.