Home / 20,507.61-30,761.22-5,716.50

Finding the Fourth Proportional to 20,507.61, 30,761.22 and 5,716.50

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Solution

The fourth proportional to 20,507.61, 30,761.22 and 5,716.50 is: 8,574.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,507.61 : 30,761.22 = 5,716.50 : x
  2. Step 2: Convert to fraction form
    20,507.61/30,761.22 = 5,716.50/x
  3. Step 3: Cross multiply
    20,507.61x = 30,761.22 × 5,716.50
  4. Step 4: Simplify right side
    20,507.61x = 175,846,474.57
  5. Step 5: Solve for x
    x = 175,846,474.57/20,507.61
  6. Step 6: Final answer
    x = 8,574.70

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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.