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Finding the Fourth Proportional to 18,848.29, 28,272.65 and 4,808.29

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Solution

The fourth proportional to 18,848.29, 28,272.65 and 4,808.29 is: 7,212.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,848.29 : 28,272.65 = 4,808.29 : x
  2. Step 2: Convert to fraction form
    18,848.29/28,272.65 = 4,808.29/x
  3. Step 3: Cross multiply
    18,848.29x = 28,272.65 × 4,808.29
  4. Step 4: Simplify right side
    18,848.29x = 135,943,100.27
  5. Step 5: Solve for x
    x = 135,943,100.27/18,848.29
  6. Step 6: Final answer
    x = 7,212.49

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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.