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Finding the Fourth Proportional to 28,501.71, 42,754.41 and 10,971.54

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Solution

The fourth proportional to 28,501.71, 42,754.41 and 10,971.54 is: 16,458.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,501.71 : 42,754.41 = 10,971.54 : x
  2. Step 2: Convert to fraction form
    28,501.71/42,754.41 = 10,971.54/x
  3. Step 3: Cross multiply
    28,501.71x = 42,754.41 × 10,971.54
  4. Step 4: Simplify right side
    28,501.71x = 469,081,719.49
  5. Step 5: Solve for x
    x = 469,081,719.49/28,501.71
  6. Step 6: Final answer
    x = 16,458.02

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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.