Home / 15,279.25-21,085.23-8,564.94

Finding the Fourth Proportional to 15,279.25, 21,085.23 and 8,564.94

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Solution

The fourth proportional to 15,279.25, 21,085.23 and 8,564.94 is: 11,819.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,279.25 : 21,085.23 = 8,564.94 : x
  2. Step 2: Convert to fraction form
    15,279.25/21,085.23 = 8,564.94/x
  3. Step 3: Cross multiply
    15,279.25x = 21,085.23 × 8,564.94
  4. Step 4: Simplify right side
    15,279.25x = 180,593,713.78
  5. Step 5: Solve for x
    x = 180,593,713.78/15,279.25
  6. Step 6: Final answer
    x = 11,819.54

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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.