Home / 20,760.16-28,648.92-11,328.64

Finding the Fourth Proportional to 20,760.16, 28,648.92 and 11,328.64

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Solution

The fourth proportional to 20,760.16, 28,648.92 and 11,328.64 is: 15,633.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.16 : 28,648.92 = 11,328.64 : x
  2. Step 2: Convert to fraction form
    20,760.16/28,648.92 = 11,328.64/x
  3. Step 3: Cross multiply
    20,760.16x = 28,648.92 × 11,328.64
  4. Step 4: Simplify right side
    20,760.16x = 324,553,301.07
  5. Step 5: Solve for x
    x = 324,553,301.07/20,760.16
  6. Step 6: Final answer
    x = 15,633.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.