Home / 13,115.07-18,093.03-8,864.58

Finding the Fourth Proportional to 13,115.07, 18,093.03 and 8,864.58

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Solution

The fourth proportional to 13,115.07, 18,093.03 and 8,864.58 is: 12,229.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,115.07 : 18,093.03 = 8,864.58 : x
  2. Step 2: Convert to fraction form
    13,115.07/18,093.03 = 8,864.58/x
  3. Step 3: Cross multiply
    13,115.07x = 18,093.03 × 8,864.58
  4. Step 4: Simplify right side
    13,115.07x = 160,387,111.88
  5. Step 5: Solve for x
    x = 160,387,111.88/13,115.07
  6. Step 6: Final answer
    x = 12,229.22

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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.