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Finding the Fourth Proportional to 15,079.33, 20,808.93 and 8,364.70

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Solution

The fourth proportional to 15,079.33, 20,808.93 and 8,364.70 is: 11,542.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,079.33 : 20,808.93 = 8,364.70 : x
  2. Step 2: Convert to fraction form
    15,079.33/20,808.93 = 8,364.70/x
  3. Step 3: Cross multiply
    15,079.33x = 20,808.93 × 8,364.70
  4. Step 4: Simplify right side
    15,079.33x = 174,060,456.77
  5. Step 5: Solve for x
    x = 174,060,456.77/15,079.33
  6. Step 6: Final answer
    x = 11,542.98

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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.