Home / 15,704.19-21,672.23-8,631.09

Finding the Fourth Proportional to 15,704.19, 21,672.23 and 8,631.09

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Solution

The fourth proportional to 15,704.19, 21,672.23 and 8,631.09 is: 11,911.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,704.19 : 21,672.23 = 8,631.09 : x
  2. Step 2: Convert to fraction form
    15,704.19/21,672.23 = 8,631.09/x
  3. Step 3: Cross multiply
    15,704.19x = 21,672.23 × 8,631.09
  4. Step 4: Simplify right side
    15,704.19x = 187,054,924.48
  5. Step 5: Solve for x
    x = 187,054,924.48/15,704.19
  6. Step 6: Final answer
    x = 11,911.15

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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.