Home / 20,711.53-31,080.66-7,562.80

Finding the Fourth Proportional to 20,711.53, 31,080.66 and 7,562.80

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Solution

The fourth proportional to 20,711.53, 31,080.66 and 7,562.80 is: 11,349.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.53 : 31,080.66 = 7,562.80 : x
  2. Step 2: Convert to fraction form
    20,711.53/31,080.66 = 7,562.80/x
  3. Step 3: Cross multiply
    20,711.53x = 31,080.66 × 7,562.80
  4. Step 4: Simplify right side
    20,711.53x = 235,056,815.45
  5. Step 5: Solve for x
    x = 235,056,815.45/20,711.53
  6. Step 6: Final answer
    x = 11,349.08

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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.