Home / 28,656.29-42,976.13-12,015.87

Finding the Fourth Proportional to 28,656.29, 42,976.13 and 12,015.87

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Solution

The fourth proportional to 28,656.29, 42,976.13 and 12,015.87 is: 18,020.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,656.29 : 42,976.13 = 12,015.87 : x
  2. Step 2: Convert to fraction form
    28,656.29/42,976.13 = 12,015.87/x
  3. Step 3: Cross multiply
    28,656.29x = 42,976.13 × 12,015.87
  4. Step 4: Simplify right side
    28,656.29x = 516,395,531.10
  5. Step 5: Solve for x
    x = 516,395,531.10/28,656.29
  6. Step 6: Final answer
    x = 18,020.32

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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.