Home / 19,252.80-28,857.60-9,889.20

Finding the Fourth Proportional to 19,252.80, 28,857.60 and 9,889.20

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Solution

The fourth proportional to 19,252.80, 28,857.60 and 9,889.20 is: 14,822.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,252.80 : 28,857.60 = 9,889.20 : x
  2. Step 2: Convert to fraction form
    19,252.80/28,857.60 = 9,889.20/x
  3. Step 3: Cross multiply
    19,252.80x = 28,857.60 × 9,889.20
  4. Step 4: Simplify right side
    19,252.80x = 285,378,577.92
  5. Step 5: Solve for x
    x = 285,378,577.92/19,252.80
  6. Step 6: Final answer
    x = 14,822.71

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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.