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Finding the Fourth Proportional to 15,239.70, 22,868.28 and 8,219.67

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Solution

The fourth proportional to 15,239.70, 22,868.28 and 8,219.67 is: 12,334.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,239.70 : 22,868.28 = 8,219.67 : x
  2. Step 2: Convert to fraction form
    15,239.70/22,868.28 = 8,219.67/x
  3. Step 3: Cross multiply
    15,239.70x = 22,868.28 × 8,219.67
  4. Step 4: Simplify right side
    15,239.70x = 187,969,715.07
  5. Step 5: Solve for x
    x = 187,969,715.07/15,239.70
  6. Step 6: Final answer
    x = 12,334.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.