Home / 20,411.15-30,587.51-11,627.91

Finding the Fourth Proportional to 20,411.15, 30,587.51 and 11,627.91

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Solution

The fourth proportional to 20,411.15, 30,587.51 and 11,627.91 is: 17,425.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,411.15 : 30,587.51 = 11,627.91 : x
  2. Step 2: Convert to fraction form
    20,411.15/30,587.51 = 11,627.91/x
  3. Step 3: Cross multiply
    20,411.15x = 30,587.51 × 11,627.91
  4. Step 4: Simplify right side
    20,411.15x = 355,668,755.26
  5. Step 5: Solve for x
    x = 355,668,755.26/20,411.15
  6. Step 6: Final answer
    x = 17,425.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.