Home / 29,121.15-43,674.50-12,479.29

Finding the Fourth Proportional to 29,121.15, 43,674.50 and 12,479.29

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Solution

The fourth proportional to 29,121.15, 43,674.50 and 12,479.29 is: 18,715.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,121.15 : 43,674.50 = 12,479.29 : x
  2. Step 2: Convert to fraction form
    29,121.15/43,674.50 = 12,479.29/x
  3. Step 3: Cross multiply
    29,121.15x = 43,674.50 × 12,479.29
  4. Step 4: Simplify right side
    29,121.15x = 545,026,751.11
  5. Step 5: Solve for x
    x = 545,026,751.11/29,121.15
  6. Step 6: Final answer
    x = 18,715.84

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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.