Home / 15,272.46-21,076.56-8,558.36

Finding the Fourth Proportional to 15,272.46, 21,076.56 and 8,558.36

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Solution

The fourth proportional to 15,272.46, 21,076.56 and 8,558.36 is: 11,810.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,272.46 : 21,076.56 = 8,558.36 : x
  2. Step 2: Convert to fraction form
    15,272.46/21,076.56 = 8,558.36/x
  3. Step 3: Cross multiply
    15,272.46x = 21,076.56 × 8,558.36
  4. Step 4: Simplify right side
    15,272.46x = 180,380,788.04
  5. Step 5: Solve for x
    x = 180,380,788.04/15,272.46
  6. Step 6: Final answer
    x = 11,810.85

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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.