Home / 18,730.40-28,087.14-9,963.44

Finding the Fourth Proportional to 18,730.40, 28,087.14 and 9,963.44

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Solution

The fourth proportional to 18,730.40, 28,087.14 and 9,963.44 is: 14,940.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,730.40 : 28,087.14 = 9,963.44 : x
  2. Step 2: Convert to fraction form
    18,730.40/28,087.14 = 9,963.44/x
  3. Step 3: Cross multiply
    18,730.40x = 28,087.14 × 9,963.44
  4. Step 4: Simplify right side
    18,730.40x = 279,844,534.16
  5. Step 5: Solve for x
    x = 279,844,534.16/18,730.40
  6. Step 6: Final answer
    x = 14,940.66

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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.