Home / 15,200.91-20,976.85-8,486.35

Finding the Fourth Proportional to 15,200.91, 20,976.85 and 8,486.35

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Solution

The fourth proportional to 15,200.91, 20,976.85 and 8,486.35 is: 11,710.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,200.91 : 20,976.85 = 8,486.35 : x
  2. Step 2: Convert to fraction form
    15,200.91/20,976.85 = 8,486.35/x
  3. Step 3: Cross multiply
    15,200.91x = 20,976.85 × 8,486.35
  4. Step 4: Simplify right side
    15,200.91x = 178,016,817.34
  5. Step 5: Solve for x
    x = 178,016,817.34/15,200.91
  6. Step 6: Final answer
    x = 11,710.93

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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.