Home / 18,744.68-28,058.46-12,509.80

Finding the Fourth Proportional to 18,744.68, 28,058.46 and 12,509.80

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Solution

The fourth proportional to 18,744.68, 28,058.46 and 12,509.80 is: 18,725.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,744.68 : 28,058.46 = 12,509.80 : x
  2. Step 2: Convert to fraction form
    18,744.68/28,058.46 = 12,509.80/x
  3. Step 3: Cross multiply
    18,744.68x = 28,058.46 × 12,509.80
  4. Step 4: Simplify right side
    18,744.68x = 351,005,722.91
  5. Step 5: Solve for x
    x = 351,005,722.91/18,744.68
  6. Step 6: Final answer
    x = 18,725.62

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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.