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Finding the Fourth Proportional to 19,200.46, 28,799.68 and 7,359.91

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Solution

The fourth proportional to 19,200.46, 28,799.68 and 7,359.91 is: 11,039.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,200.46 : 28,799.68 = 7,359.91 : x
  2. Step 2: Convert to fraction form
    19,200.46/28,799.68 = 7,359.91/x
  3. Step 3: Cross multiply
    19,200.46x = 28,799.68 × 7,359.91
  4. Step 4: Simplify right side
    19,200.46x = 211,963,052.83
  5. Step 5: Solve for x
    x = 211,963,052.83/19,200.46
  6. Step 6: Final answer
    x = 11,039.48

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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.