Home / 12,918.13-17,829.48-8,445.73

Finding the Fourth Proportional to 12,918.13, 17,829.48 and 8,445.73

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Solution

The fourth proportional to 12,918.13, 17,829.48 and 8,445.73 is: 11,656.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.13 : 17,829.48 = 8,445.73 : x
  2. Step 2: Convert to fraction form
    12,918.13/17,829.48 = 8,445.73/x
  3. Step 3: Cross multiply
    12,918.13x = 17,829.48 × 8,445.73
  4. Step 4: Simplify right side
    12,918.13x = 150,582,974.12
  5. Step 5: Solve for x
    x = 150,582,974.12/12,918.13
  6. Step 6: Final answer
    x = 11,656.72

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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.