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Finding the Fourth Proportional to 28,466.76, 42,719.56 and 9,998.76

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Solution

The fourth proportional to 28,466.76, 42,719.56 and 9,998.76 is: 15,004.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,466.76 : 42,719.56 = 9,998.76 : x
  2. Step 2: Convert to fraction form
    28,466.76/42,719.56 = 9,998.76/x
  3. Step 3: Cross multiply
    28,466.76x = 42,719.56 × 9,998.76
  4. Step 4: Simplify right side
    28,466.76x = 427,142,627.75
  5. Step 5: Solve for x
    x = 427,142,627.75/28,466.76
  6. Step 6: Final answer
    x = 15,004.96

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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.