Home / 18,724.32-28,080.72-9,954.40

Finding the Fourth Proportional to 18,724.32, 28,080.72 and 9,954.40

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Solution

The fourth proportional to 18,724.32, 28,080.72 and 9,954.40 is: 14,928.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,724.32 : 28,080.72 = 9,954.40 : x
  2. Step 2: Convert to fraction form
    18,724.32/28,080.72 = 9,954.40/x
  3. Step 3: Cross multiply
    18,724.32x = 28,080.72 × 9,954.40
  4. Step 4: Simplify right side
    18,724.32x = 279,526,719.17
  5. Step 5: Solve for x
    x = 279,526,719.17/18,724.32
  6. Step 6: Final answer
    x = 14,928.54

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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.