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Finding the Fourth Proportional to 20,864.46, 28,794.03 and 11,432.46

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Solution

The fourth proportional to 20,864.46, 28,794.03 and 11,432.46 is: 15,777.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.46 : 28,794.03 = 11,432.46 : x
  2. Step 2: Convert to fraction form
    20,864.46/28,794.03 = 11,432.46/x
  3. Step 3: Cross multiply
    20,864.46x = 28,794.03 × 11,432.46
  4. Step 4: Simplify right side
    20,864.46x = 329,186,596.21
  5. Step 5: Solve for x
    x = 329,186,596.21/20,864.46
  6. Step 6: Final answer
    x = 15,777.38

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Double scale
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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.