Home / 20,947.46-31,417.61-6,907.64

Finding the Fourth Proportional to 20,947.46, 31,417.61 and 6,907.64

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Solution

The fourth proportional to 20,947.46, 31,417.61 and 6,907.64 is: 10,360.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.46 : 31,417.61 = 6,907.64 : x
  2. Step 2: Convert to fraction form
    20,947.46/31,417.61 = 6,907.64/x
  3. Step 3: Cross multiply
    20,947.46x = 31,417.61 × 6,907.64
  4. Step 4: Simplify right side
    20,947.46x = 217,021,347.91
  5. Step 5: Solve for x
    x = 217,021,347.91/20,947.46
  6. Step 6: Final answer
    x = 10,360.27

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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.