Home / 13,821.91-20,732.86-4,587.91

Finding the Fourth Proportional to 13,821.91, 20,732.86 and 4,587.91

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Solution

The fourth proportional to 13,821.91, 20,732.86 and 4,587.91 is: 6,881.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.91 : 20,732.86 = 4,587.91 : x
  2. Step 2: Convert to fraction form
    13,821.91/20,732.86 = 4,587.91/x
  3. Step 3: Cross multiply
    13,821.91x = 20,732.86 × 4,587.91
  4. Step 4: Simplify right side
    13,821.91x = 95,120,495.72
  5. Step 5: Solve for x
    x = 95,120,495.72/13,821.91
  6. Step 6: Final answer
    x = 6,881.86

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1.5x scale

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.