Home / 15,209.15-20,988.73-8,494.83

Finding the Fourth Proportional to 15,209.15, 20,988.73 and 8,494.83

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Solution

The fourth proportional to 15,209.15, 20,988.73 and 8,494.83 is: 11,722.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,209.15 : 20,988.73 = 8,494.83 : x
  2. Step 2: Convert to fraction form
    15,209.15/20,988.73 = 8,494.83/x
  3. Step 3: Cross multiply
    15,209.15x = 20,988.73 × 8,494.83
  4. Step 4: Simplify right side
    15,209.15x = 178,295,663.79
  5. Step 5: Solve for x
    x = 178,295,663.79/15,209.15
  6. Step 6: Final answer
    x = 11,722.92

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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.