Home / 15,431.38-21,299.32-9,058.84

Finding the Fourth Proportional to 15,431.38, 21,299.32 and 9,058.84

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Solution

The fourth proportional to 15,431.38, 21,299.32 and 9,058.84 is: 12,503.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,431.38 : 21,299.32 = 9,058.84 : x
  2. Step 2: Convert to fraction form
    15,431.38/21,299.32 = 9,058.84/x
  3. Step 3: Cross multiply
    15,431.38x = 21,299.32 × 9,058.84
  4. Step 4: Simplify right side
    15,431.38x = 192,947,131.99
  5. Step 5: Solve for x
    x = 192,947,131.99/15,431.38
  6. Step 6: Final answer
    x = 12,503.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.