Home / 14,975.89-20,685.13-11,215.85

Finding the Fourth Proportional to 14,975.89, 20,685.13 and 11,215.85

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Solution

The fourth proportional to 14,975.89, 20,685.13 and 11,215.85 is: 15,491.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,975.89 : 20,685.13 = 11,215.85 : x
  2. Step 2: Convert to fraction form
    14,975.89/20,685.13 = 11,215.85/x
  3. Step 3: Cross multiply
    14,975.89x = 20,685.13 × 11,215.85
  4. Step 4: Simplify right side
    14,975.89x = 232,001,183.85
  5. Step 5: Solve for x
    x = 232,001,183.85/14,975.89
  6. Step 6: Final answer
    x = 15,491.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.