Home / 20,292.78-28,004.18-11,340.66

Finding the Fourth Proportional to 20,292.78, 28,004.18 and 11,340.66

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Solution

The fourth proportional to 20,292.78, 28,004.18 and 11,340.66 is: 15,650.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.78 : 28,004.18 = 11,340.66 : x
  2. Step 2: Convert to fraction form
    20,292.78/28,004.18 = 11,340.66/x
  3. Step 3: Cross multiply
    20,292.78x = 28,004.18 × 11,340.66
  4. Step 4: Simplify right side
    20,292.78x = 317,585,827.26
  5. Step 5: Solve for x
    x = 317,585,827.26/20,292.78
  6. Step 6: Final answer
    x = 15,650.19

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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.