Home / 31,406.20-47,109.30-10,629.70

Finding the Fourth Proportional to 31,406.20, 47,109.30 and 10,629.70

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Solution

The fourth proportional to 31,406.20, 47,109.30 and 10,629.70 is: 15,944.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,406.20 : 47,109.30 = 10,629.70 : x
  2. Step 2: Convert to fraction form
    31,406.20/47,109.30 = 10,629.70/x
  3. Step 3: Cross multiply
    31,406.20x = 47,109.30 × 10,629.70
  4. Step 4: Simplify right side
    31,406.20x = 500,757,726.21
  5. Step 5: Solve for x
    x = 500,757,726.21/31,406.20
  6. Step 6: Final answer
    x = 15,944.55

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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.