Home / 31,347.40-47,037.27-20,824.69

Finding the Fourth Proportional to 31,347.40, 47,037.27 and 20,824.69

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Solution

The fourth proportional to 31,347.40, 47,037.27 and 20,824.69 is: 31,247.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,347.40 : 47,037.27 = 20,824.69 : x
  2. Step 2: Convert to fraction form
    31,347.40/47,037.27 = 20,824.69/x
  3. Step 3: Cross multiply
    31,347.40x = 47,037.27 × 20,824.69
  4. Step 4: Simplify right side
    31,347.40x = 979,536,566.20
  5. Step 5: Solve for x
    x = 979,536,566.20/31,347.40
  6. Step 6: Final answer
    x = 31,247.78

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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.