Home / 28,686.15-43,029.63-10,917.05

Finding the Fourth Proportional to 28,686.15, 43,029.63 and 10,917.05

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Solution

The fourth proportional to 28,686.15, 43,029.63 and 10,917.05 is: 16,375.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,686.15 : 43,029.63 = 10,917.05 : x
  2. Step 2: Convert to fraction form
    28,686.15/43,029.63 = 10,917.05/x
  3. Step 3: Cross multiply
    28,686.15x = 43,029.63 × 10,917.05
  4. Step 4: Simplify right side
    28,686.15x = 469,756,407.04
  5. Step 5: Solve for x
    x = 469,756,407.04/28,686.15
  6. Step 6: Final answer
    x = 16,375.72

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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.