Home / 12,657.39-18,991.13-4,864.11

Finding the Fourth Proportional to 12,657.39, 18,991.13 and 4,864.11

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Solution

The fourth proportional to 12,657.39, 18,991.13 and 4,864.11 is: 7,298.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,657.39 : 18,991.13 = 4,864.11 : x
  2. Step 2: Convert to fraction form
    12,657.39/18,991.13 = 4,864.11/x
  3. Step 3: Cross multiply
    12,657.39x = 18,991.13 × 4,864.11
  4. Step 4: Simplify right side
    12,657.39x = 92,374,921.02
  5. Step 5: Solve for x
    x = 92,374,921.02/12,657.39
  6. Step 6: Final answer
    x = 7,298.10

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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.