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Finding the Fourth Proportional to 28,093.76, 42,108 and 10,552.40

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Solution

The fourth proportional to 28,093.76, 42,108 and 10,552.40 is: 15,816.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,093.76 : 42,108 = 10,552.40 : x
  2. Step 2: Convert to fraction form
    28,093.76/42,108 = 10,552.40/x
  3. Step 3: Cross multiply
    28,093.76x = 42,108 × 10,552.40
  4. Step 4: Simplify right side
    28,093.76x = 444,340,459.20
  5. Step 5: Solve for x
    x = 444,340,459.20/28,093.76
  6. Step 6: Final answer
    x = 15,816.34

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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.