Home / 18,731.11-28,087.36-6,884.40

Finding the Fourth Proportional to 18,731.11, 28,087.36 and 6,884.40

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Solution

The fourth proportional to 18,731.11, 28,087.36 and 6,884.40 is: 10,323.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,731.11 : 28,087.36 = 6,884.40 : x
  2. Step 2: Convert to fraction form
    18,731.11/28,087.36 = 6,884.40/x
  3. Step 3: Cross multiply
    18,731.11x = 28,087.36 × 6,884.40
  4. Step 4: Simplify right side
    18,731.11x = 193,364,621.18
  5. Step 5: Solve for x
    x = 193,364,621.18/18,731.11
  6. Step 6: Final answer
    x = 10,323.18

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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.