Home / 15,296.70-21,109.42-8,923.56

Finding the Fourth Proportional to 15,296.70, 21,109.42 and 8,923.56

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Solution

The fourth proportional to 15,296.70, 21,109.42 and 8,923.56 is: 12,314.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,296.70 : 21,109.42 = 8,923.56 : x
  2. Step 2: Convert to fraction form
    15,296.70/21,109.42 = 8,923.56/x
  3. Step 3: Cross multiply
    15,296.70x = 21,109.42 × 8,923.56
  4. Step 4: Simplify right side
    15,296.70x = 188,371,175.94
  5. Step 5: Solve for x
    x = 188,371,175.94/15,296.70
  6. Step 6: Final answer
    x = 12,314.50

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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.