Home / 15,704.32-21,671.44-8,990.60

Finding the Fourth Proportional to 15,704.32, 21,671.44 and 8,990.60

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Solution

The fourth proportional to 15,704.32, 21,671.44 and 8,990.60 is: 12,406.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,704.32 : 21,671.44 = 8,990.60 : x
  2. Step 2: Convert to fraction form
    15,704.32/21,671.44 = 8,990.60/x
  3. Step 3: Cross multiply
    15,704.32x = 21,671.44 × 8,990.60
  4. Step 4: Simplify right side
    15,704.32x = 194,839,248.46
  5. Step 5: Solve for x
    x = 194,839,248.46/15,704.32
  6. Step 6: Final answer
    x = 12,406.73

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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.