Home / 20,549.07-28,357.68-11,117.61

Finding the Fourth Proportional to 20,549.07, 28,357.68 and 11,117.61

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Solution

The fourth proportional to 20,549.07, 28,357.68 and 11,117.61 is: 15,342.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,549.07 : 28,357.68 = 11,117.61 : x
  2. Step 2: Convert to fraction form
    20,549.07/28,357.68 = 11,117.61/x
  3. Step 3: Cross multiply
    20,549.07x = 28,357.68 × 11,117.61
  4. Step 4: Simplify right side
    20,549.07x = 315,269,626.74
  5. Step 5: Solve for x
    x = 315,269,626.74/20,549.07
  6. Step 6: Final answer
    x = 15,342.28

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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.