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Finding the Fourth Proportional to 19,101.92, 28,648.92 and 5,247.68

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Solution

The fourth proportional to 19,101.92, 28,648.92 and 5,247.68 is: 7,870.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,101.92 : 28,648.92 = 5,247.68 : x
  2. Step 2: Convert to fraction form
    19,101.92/28,648.92 = 5,247.68/x
  3. Step 3: Cross multiply
    19,101.92x = 28,648.92 × 5,247.68
  4. Step 4: Simplify right side
    19,101.92x = 150,340,364.51
  5. Step 5: Solve for x
    x = 150,340,364.51/19,101.92
  6. Step 6: Final answer
    x = 7,870.43

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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.