Home / 15,291.74-21,101.34-8,576.45

Finding the Fourth Proportional to 15,291.74, 21,101.34 and 8,576.45

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Solution

The fourth proportional to 15,291.74, 21,101.34 and 8,576.45 is: 11,834.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,291.74 : 21,101.34 = 8,576.45 : x
  2. Step 2: Convert to fraction form
    15,291.74/21,101.34 = 8,576.45/x
  3. Step 3: Cross multiply
    15,291.74x = 21,101.34 × 8,576.45
  4. Step 4: Simplify right side
    15,291.74x = 180,974,481.94
  5. Step 5: Solve for x
    x = 180,974,481.94/15,291.74
  6. Step 6: Final answer
    x = 11,834.79

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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.