Home / 15,158.77-20,919.05-8,444

Finding the Fourth Proportional to 15,158.77, 20,919.05 and 8,444

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Solution

The fourth proportional to 15,158.77, 20,919.05 and 8,444 is: 11,652.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,158.77 : 20,919.05 = 8,444 : x
  2. Step 2: Convert to fraction form
    15,158.77/20,919.05 = 8,444/x
  3. Step 3: Cross multiply
    15,158.77x = 20,919.05 × 8,444
  4. Step 4: Simplify right side
    15,158.77x = 176,640,458.20
  5. Step 5: Solve for x
    x = 176,640,458.20/15,158.77
  6. Step 6: Final answer
    x = 11,652.69

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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.