Home / 20,492.18-28,279.69-11,418.16

Finding the Fourth Proportional to 20,492.18, 28,279.69 and 11,418.16

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Solution

The fourth proportional to 20,492.18, 28,279.69 and 11,418.16 is: 15,757.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,492.18 : 28,279.69 = 11,418.16 : x
  2. Step 2: Convert to fraction form
    20,492.18/28,279.69 = 11,418.16/x
  3. Step 3: Cross multiply
    20,492.18x = 28,279.69 × 11,418.16
  4. Step 4: Simplify right side
    20,492.18x = 322,902,043.18
  5. Step 5: Solve for x
    x = 322,902,043.18/20,492.18
  6. Step 6: Final answer
    x = 15,757.33

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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.