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Finding the Fourth Proportional to 28,811.70, 43,220.43 and 10,339.38

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Solution

The fourth proportional to 28,811.70, 43,220.43 and 10,339.38 is: 15,510.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,811.70 : 43,220.43 = 10,339.38 : x
  2. Step 2: Convert to fraction form
    28,811.70/43,220.43 = 10,339.38/x
  3. Step 3: Cross multiply
    28,811.70x = 43,220.43 × 10,339.38
  4. Step 4: Simplify right side
    28,811.70x = 446,872,449.53
  5. Step 5: Solve for x
    x = 446,872,449.53/28,811.70
  6. Step 6: Final answer
    x = 15,510.10

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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.