Home / 12,521.40-18,803.70-12,132.60

Finding the Fourth Proportional to 12,521.40, 18,803.70 and 12,132.60

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Solution

The fourth proportional to 12,521.40, 18,803.70 and 12,132.60 is: 18,219.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.40 : 18,803.70 = 12,132.60 : x
  2. Step 2: Convert to fraction form
    12,521.40/18,803.70 = 12,132.60/x
  3. Step 3: Cross multiply
    12,521.40x = 18,803.70 × 12,132.60
  4. Step 4: Simplify right side
    12,521.40x = 228,137,770.62
  5. Step 5: Solve for x
    x = 228,137,770.62/12,521.40
  6. Step 6: Final answer
    x = 18,219.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.