Home / 18,436.64-25,441.72-11,278.47

Finding the Fourth Proportional to 18,436.64, 25,441.72 and 11,278.47

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Solution

The fourth proportional to 18,436.64, 25,441.72 and 11,278.47 is: 15,563.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,436.64 : 25,441.72 = 11,278.47 : x
  2. Step 2: Convert to fraction form
    18,436.64/25,441.72 = 11,278.47/x
  3. Step 3: Cross multiply
    18,436.64x = 25,441.72 × 11,278.47
  4. Step 4: Simplify right side
    18,436.64x = 286,943,560.03
  5. Step 5: Solve for x
    x = 286,943,560.03/18,436.64
  6. Step 6: Final answer
    x = 15,563.77

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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.