Home / 20,876.94-28,810.17-11,445.48

Finding the Fourth Proportional to 20,876.94, 28,810.17 and 11,445.48

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Solution

The fourth proportional to 20,876.94, 28,810.17 and 11,445.48 is: 15,794.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,876.94 : 28,810.17 = 11,445.48 : x
  2. Step 2: Convert to fraction form
    20,876.94/28,810.17 = 11,445.48/x
  3. Step 3: Cross multiply
    20,876.94x = 28,810.17 × 11,445.48
  4. Step 4: Simplify right side
    20,876.94x = 329,746,224.53
  5. Step 5: Solve for x
    x = 329,746,224.53/20,876.94
  6. Step 6: Final answer
    x = 15,794.76

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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.