Home / 28,013.08-42,018.78-11,372.72

Finding the Fourth Proportional to 28,013.08, 42,018.78 and 11,372.72

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Solution

The fourth proportional to 28,013.08, 42,018.78 and 11,372.72 is: 17,058.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,013.08 : 42,018.78 = 11,372.72 : x
  2. Step 2: Convert to fraction form
    28,013.08/42,018.78 = 11,372.72/x
  3. Step 3: Cross multiply
    28,013.08x = 42,018.78 × 11,372.72
  4. Step 4: Simplify right side
    28,013.08x = 477,867,819.68
  5. Step 5: Solve for x
    x = 477,867,819.68/28,013.08
  6. Step 6: Final answer
    x = 17,058.74

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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.