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Finding the Fourth Proportional to 28,553.31, 42,835.19 and 8,830.53

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Solution

The fourth proportional to 28,553.31, 42,835.19 and 8,830.53 is: 13,247.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,553.31 : 42,835.19 = 8,830.53 : x
  2. Step 2: Convert to fraction form
    28,553.31/42,835.19 = 8,830.53/x
  3. Step 3: Cross multiply
    28,553.31x = 42,835.19 × 8,830.53
  4. Step 4: Simplify right side
    28,553.31x = 378,257,386.20
  5. Step 5: Solve for x
    x = 378,257,386.20/28,553.31
  6. Step 6: Final answer
    x = 13,247.41

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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.