Home / 20,876.29-28,809.18-11,316.14

Finding the Fourth Proportional to 20,876.29, 28,809.18 and 11,316.14

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Solution

The fourth proportional to 20,876.29, 28,809.18 and 11,316.14 is: 15,616.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,876.29 : 28,809.18 = 11,316.14 : x
  2. Step 2: Convert to fraction form
    20,876.29/28,809.18 = 11,316.14/x
  3. Step 3: Cross multiply
    20,876.29x = 28,809.18 × 11,316.14
  4. Step 4: Simplify right side
    20,876.29x = 326,008,657.58
  5. Step 5: Solve for x
    x = 326,008,657.58/20,876.29
  6. Step 6: Final answer
    x = 15,616.22

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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.