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Finding the Fourth Proportional to 19,243.80, 28,819.80 and 9,351.30

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Solution

The fourth proportional to 19,243.80, 28,819.80 and 9,351.30 is: 14,004.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,243.80 : 28,819.80 = 9,351.30 : x
  2. Step 2: Convert to fraction form
    19,243.80/28,819.80 = 9,351.30/x
  3. Step 3: Cross multiply
    19,243.80x = 28,819.80 × 9,351.30
  4. Step 4: Simplify right side
    19,243.80x = 269,502,595.74
  5. Step 5: Solve for x
    x = 269,502,595.74/19,243.80
  6. Step 6: Final answer
    x = 14,004.65

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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.