Home / 20,947.98-31,425.30-6,903.90

Finding the Fourth Proportional to 20,947.98, 31,425.30 and 6,903.90

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Solution

The fourth proportional to 20,947.98, 31,425.30 and 6,903.90 is: 10,356.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.98 : 31,425.30 = 6,903.90 : x
  2. Step 2: Convert to fraction form
    20,947.98/31,425.30 = 6,903.90/x
  3. Step 3: Cross multiply
    20,947.98x = 31,425.30 × 6,903.90
  4. Step 4: Simplify right side
    20,947.98x = 216,957,128.67
  5. Step 5: Solve for x
    x = 216,957,128.67/20,947.98
  6. Step 6: Final answer
    x = 10,356.95

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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.