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Finding the Fourth Proportional to 15,224, 21,012.16 and 8,600

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Solution

The fourth proportional to 15,224, 21,012.16 and 8,600 is: 11,869.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,224 : 21,012.16 = 8,600 : x
  2. Step 2: Convert to fraction form
    15,224/21,012.16 = 8,600/x
  3. Step 3: Cross multiply
    15,224x = 21,012.16 × 8,600
  4. Step 4: Simplify right side
    15,224x = 180,704,576
  5. Step 5: Solve for x
    x = 180,704,576/15,224
  6. Step 6: Final answer
    x = 11,869.72

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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.