Home / 20,760.33-31,114.40-8,900.07

Finding the Fourth Proportional to 20,760.33, 31,114.40 and 8,900.07

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Solution

The fourth proportional to 20,760.33, 31,114.40 and 8,900.07 is: 13,338.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.33 : 31,114.40 = 8,900.07 : x
  2. Step 2: Convert to fraction form
    20,760.33/31,114.40 = 8,900.07/x
  3. Step 3: Cross multiply
    20,760.33x = 31,114.40 × 8,900.07
  4. Step 4: Simplify right side
    20,760.33x = 276,920,293.51
  5. Step 5: Solve for x
    x = 276,920,293.51/20,760.33
  6. Step 6: Final answer
    x = 13,338.92

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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.