Home / 20,553.61-28,364.06-11,122.18

Finding the Fourth Proportional to 20,553.61, 28,364.06 and 11,122.18

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Solution

The fourth proportional to 20,553.61, 28,364.06 and 11,122.18 is: 15,348.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.61 : 28,364.06 = 11,122.18 : x
  2. Step 2: Convert to fraction form
    20,553.61/28,364.06 = 11,122.18/x
  3. Step 3: Cross multiply
    20,553.61x = 28,364.06 × 11,122.18
  4. Step 4: Simplify right side
    20,553.61x = 315,470,039.03
  5. Step 5: Solve for x
    x = 315,470,039.03/20,553.61
  6. Step 6: Final answer
    x = 15,348.64

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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.