Home / 28,278.62-42,418.06-9,558.76

Finding the Fourth Proportional to 28,278.62, 42,418.06 and 9,558.76

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Solution

The fourth proportional to 28,278.62, 42,418.06 and 9,558.76 is: 14,338.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,278.62 : 42,418.06 = 9,558.76 : x
  2. Step 2: Convert to fraction form
    28,278.62/42,418.06 = 9,558.76/x
  3. Step 3: Cross multiply
    28,278.62x = 42,418.06 × 9,558.76
  4. Step 4: Simplify right side
    28,278.62x = 405,464,058.57
  5. Step 5: Solve for x
    x = 405,464,058.57/28,278.62
  6. Step 6: Final answer
    x = 14,338.18

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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.