Home / 20,843.15-28,763.52-11,411.70

Finding the Fourth Proportional to 20,843.15, 28,763.52 and 11,411.70

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Solution

The fourth proportional to 20,843.15, 28,763.52 and 11,411.70 is: 15,748.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,843.15 : 28,763.52 = 11,411.70 : x
  2. Step 2: Convert to fraction form
    20,843.15/28,763.52 = 11,411.70/x
  3. Step 3: Cross multiply
    20,843.15x = 28,763.52 × 11,411.70
  4. Step 4: Simplify right side
    20,843.15x = 328,240,661.18
  5. Step 5: Solve for x
    x = 328,240,661.18/20,843.15
  6. Step 6: Final answer
    x = 15,748.13

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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.