Home / 20,841.68-28,763.17-11,887.13

Finding the Fourth Proportional to 20,841.68, 28,763.17 and 11,887.13

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Solution

The fourth proportional to 20,841.68, 28,763.17 and 11,887.13 is: 16,405.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,841.68 : 28,763.17 = 11,887.13 : x
  2. Step 2: Convert to fraction form
    20,841.68/28,763.17 = 11,887.13/x
  3. Step 3: Cross multiply
    20,841.68x = 28,763.17 × 11,887.13
  4. Step 4: Simplify right side
    20,841.68x = 341,911,583.19
  5. Step 5: Solve for x
    x = 341,911,583.19/20,841.68
  6. Step 6: Final answer
    x = 16,405.18

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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.