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Finding the Fourth Proportional to 20,252.80, 27,948.79 and 11,300.30

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Solution

The fourth proportional to 20,252.80, 27,948.79 and 11,300.30 is: 15,594.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,252.80 : 27,948.79 = 11,300.30 : x
  2. Step 2: Convert to fraction form
    20,252.80/27,948.79 = 11,300.30/x
  3. Step 3: Cross multiply
    20,252.80x = 27,948.79 × 11,300.30
  4. Step 4: Simplify right side
    20,252.80x = 315,829,711.64
  5. Step 5: Solve for x
    x = 315,829,711.64/20,252.80
  6. Step 6: Final answer
    x = 15,594.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.