Home / 12,279.35-18,415.15-5,257.51

Finding the Fourth Proportional to 12,279.35, 18,415.15 and 5,257.51

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Solution

The fourth proportional to 12,279.35, 18,415.15 and 5,257.51 is: 7,884.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.35 : 18,415.15 = 5,257.51 : x
  2. Step 2: Convert to fraction form
    12,279.35/18,415.15 = 5,257.51/x
  3. Step 3: Cross multiply
    12,279.35x = 18,415.15 × 5,257.51
  4. Step 4: Simplify right side
    12,279.35x = 96,817,776.09
  5. Step 5: Solve for x
    x = 96,817,776.09/12,279.35
  6. Step 6: Final answer
    x = 7,884.60

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1.5x scale

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.