Home / 10,979.19-16,430.48-8,981.73

Finding the Fourth Proportional to 10,979.19, 16,430.48 and 8,981.73

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Solution

The fourth proportional to 10,979.19, 16,430.48 and 8,981.73 is: 13,441.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.19 : 16,430.48 = 8,981.73 : x
  2. Step 2: Convert to fraction form
    10,979.19/16,430.48 = 8,981.73/x
  3. Step 3: Cross multiply
    10,979.19x = 16,430.48 × 8,981.73
  4. Step 4: Simplify right side
    10,979.19x = 147,574,198.66
  5. Step 5: Solve for x
    x = 147,574,198.66/10,979.19
  6. Step 6: Final answer
    x = 13,441.26

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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.