Home / 15,279.50-21,080.97-8,564.19

Finding the Fourth Proportional to 15,279.50, 21,080.97 and 8,564.19

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Solution

The fourth proportional to 15,279.50, 21,080.97 and 8,564.19 is: 11,815.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,279.50 : 21,080.97 = 8,564.19 : x
  2. Step 2: Convert to fraction form
    15,279.50/21,080.97 = 8,564.19/x
  3. Step 3: Cross multiply
    15,279.50x = 21,080.97 × 8,564.19
  4. Step 4: Simplify right side
    15,279.50x = 180,541,432.46
  5. Step 5: Solve for x
    x = 180,541,432.46/15,279.50
  6. Step 6: Final answer
    x = 11,815.93

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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.