Home / 12,378.33-17,089.86-8,600.28

Finding the Fourth Proportional to 12,378.33, 17,089.86 and 8,600.28

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Solution

The fourth proportional to 12,378.33, 17,089.86 and 8,600.28 is: 11,873.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378.33 : 17,089.86 = 8,600.28 : x
  2. Step 2: Convert to fraction form
    12,378.33/17,089.86 = 8,600.28/x
  3. Step 3: Cross multiply
    12,378.33x = 17,089.86 × 8,600.28
  4. Step 4: Simplify right side
    12,378.33x = 146,977,581.16
  5. Step 5: Solve for x
    x = 146,977,581.16/12,378.33
  6. Step 6: Final answer
    x = 11,873.78

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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.