Home / 20,727.36-31,080.96-7,570.80

Finding the Fourth Proportional to 20,727.36, 31,080.96 and 7,570.80

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Solution

The fourth proportional to 20,727.36, 31,080.96 and 7,570.80 is: 11,352.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,727.36 : 31,080.96 = 7,570.80 : x
  2. Step 2: Convert to fraction form
    20,727.36/31,080.96 = 7,570.80/x
  3. Step 3: Cross multiply
    20,727.36x = 31,080.96 × 7,570.80
  4. Step 4: Simplify right side
    20,727.36x = 235,307,731.97
  5. Step 5: Solve for x
    x = 235,307,731.97/20,727.36
  6. Step 6: Final answer
    x = 11,352.52

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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.