Home / 18,910.48-28,366.72-4,870.64

Finding the Fourth Proportional to 18,910.48, 28,366.72 and 4,870.64

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Solution

The fourth proportional to 18,910.48, 28,366.72 and 4,870.64 is: 7,306.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,910.48 : 28,366.72 = 4,870.64 : x
  2. Step 2: Convert to fraction form
    18,910.48/28,366.72 = 4,870.64/x
  3. Step 3: Cross multiply
    18,910.48x = 28,366.72 × 4,870.64
  4. Step 4: Simplify right side
    18,910.48x = 138,164,081.10
  5. Step 5: Solve for x
    x = 138,164,081.10/18,910.48
  6. Step 6: Final answer
    x = 7,306.22

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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.