Home / 20,760.65-31,135.40-7,613.09

Finding the Fourth Proportional to 20,760.65, 31,135.40 and 7,613.09

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Solution

The fourth proportional to 20,760.65, 31,135.40 and 7,613.09 is: 11,417.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.65 : 31,135.40 = 7,613.09 : x
  2. Step 2: Convert to fraction form
    20,760.65/31,135.40 = 7,613.09/x
  3. Step 3: Cross multiply
    20,760.65x = 31,135.40 × 7,613.09
  4. Step 4: Simplify right side
    20,760.65x = 237,036,564.32
  5. Step 5: Solve for x
    x = 237,036,564.32/20,760.65
  6. Step 6: Final answer
    x = 11,417.59

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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.