Home / 13,821.15-20,731.86-5,058.57

Finding the Fourth Proportional to 13,821.15, 20,731.86 and 5,058.57

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Solution

The fourth proportional to 13,821.15, 20,731.86 and 5,058.57 is: 7,587.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.15 : 20,731.86 = 5,058.57 : x
  2. Step 2: Convert to fraction form
    13,821.15/20,731.86 = 5,058.57/x
  3. Step 3: Cross multiply
    13,821.15x = 20,731.86 × 5,058.57
  4. Step 4: Simplify right side
    13,821.15x = 104,873,565.04
  5. Step 5: Solve for x
    x = 104,873,565.04/13,821.15
  6. Step 6: Final answer
    x = 7,587.90

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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.