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Finding the Fourth Proportional to 15,112.10, 20,853.11 and 8,737.67

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Solution

The fourth proportional to 15,112.10, 20,853.11 and 8,737.67 is: 12,057.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,112.10 : 20,853.11 = 8,737.67 : x
  2. Step 2: Convert to fraction form
    15,112.10/20,853.11 = 8,737.67/x
  3. Step 3: Cross multiply
    15,112.10x = 20,853.11 × 8,737.67
  4. Step 4: Simplify right side
    15,112.10x = 182,207,667.63
  5. Step 5: Solve for x
    x = 182,207,667.63/15,112.10
  6. Step 6: Final answer
    x = 12,057.07

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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.