Home / 15,704.19-21,671.31-8,630.60

Finding the Fourth Proportional to 15,704.19, 21,671.31 and 8,630.60

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Solution

The fourth proportional to 15,704.19, 21,671.31 and 8,630.60 is: 11,909.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,704.19 : 21,671.31 = 8,630.60 : x
  2. Step 2: Convert to fraction form
    15,704.19/21,671.31 = 8,630.60/x
  3. Step 3: Cross multiply
    15,704.19x = 21,671.31 × 8,630.60
  4. Step 4: Simplify right side
    15,704.19x = 187,036,299.73
  5. Step 5: Solve for x
    x = 187,036,299.73/15,704.19
  6. Step 6: Final answer
    x = 11,909.96

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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.