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Finding the Fourth Proportional to 18,868.02, 28,308.18 and 9,006.03

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Solution

The fourth proportional to 18,868.02, 28,308.18 and 9,006.03 is: 13,511.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,868.02 : 28,308.18 = 9,006.03 : x
  2. Step 2: Convert to fraction form
    18,868.02/28,308.18 = 9,006.03/x
  3. Step 3: Cross multiply
    18,868.02x = 28,308.18 × 9,006.03
  4. Step 4: Simplify right side
    18,868.02x = 254,944,318.33
  5. Step 5: Solve for x
    x = 254,944,318.33/18,868.02
  6. Step 6: Final answer
    x = 13,511.98

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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.