Home / 15,276.58-21,081.49-8,562.20

Finding the Fourth Proportional to 15,276.58, 21,081.49 and 8,562.20

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Solution

The fourth proportional to 15,276.58, 21,081.49 and 8,562.20 is: 11,815.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,276.58 : 21,081.49 = 8,562.20 : x
  2. Step 2: Convert to fraction form
    15,276.58/21,081.49 = 8,562.20/x
  3. Step 3: Cross multiply
    15,276.58x = 21,081.49 × 8,562.20
  4. Step 4: Simplify right side
    15,276.58x = 180,503,806.87
  5. Step 5: Solve for x
    x = 180,503,806.87/15,276.58
  6. Step 6: Final answer
    x = 11,815.72

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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.