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Finding the Fourth Proportional to 15,076.62, 20,810.01 and 9,108.67

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Solution

The fourth proportional to 15,076.62, 20,810.01 and 9,108.67 is: 12,572.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,076.62 : 20,810.01 = 9,108.67 : x
  2. Step 2: Convert to fraction form
    15,076.62/20,810.01 = 9,108.67/x
  3. Step 3: Cross multiply
    15,076.62x = 20,810.01 × 9,108.67
  4. Step 4: Simplify right side
    15,076.62x = 189,551,513.79
  5. Step 5: Solve for x
    x = 189,551,513.79/15,076.62
  6. Step 6: Final answer
    x = 12,572.55

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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.