Home / 20,947.20-31,417.22-6,907.38

Finding the Fourth Proportional to 20,947.20, 31,417.22 and 6,907.38

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Solution

The fourth proportional to 20,947.20, 31,417.22 and 6,907.38 is: 10,359.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.20 : 31,417.22 = 6,907.38 : x
  2. Step 2: Convert to fraction form
    20,947.20/31,417.22 = 6,907.38/x
  3. Step 3: Cross multiply
    20,947.20x = 31,417.22 × 6,907.38
  4. Step 4: Simplify right side
    20,947.20x = 217,010,677.08
  5. Step 5: Solve for x
    x = 217,010,677.08/20,947.20
  6. Step 6: Final answer
    x = 10,359.89

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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.