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Finding the Fourth Proportional to 18,907.43, 28,360.28 and 7,060.28

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Solution

The fourth proportional to 18,907.43, 28,360.28 and 7,060.28 is: 10,590.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907.43 : 28,360.28 = 7,060.28 : x
  2. Step 2: Convert to fraction form
    18,907.43/28,360.28 = 7,060.28/x
  3. Step 3: Cross multiply
    18,907.43x = 28,360.28 × 7,060.28
  4. Step 4: Simplify right side
    18,907.43x = 200,231,340.58
  5. Step 5: Solve for x
    x = 200,231,340.58/18,907.43
  6. Step 6: Final answer
    x = 10,590.09

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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.