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Finding the Fourth Proportional to 12,503.17, 18,737.47 and 12,196.99

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Solution

The fourth proportional to 12,503.17, 18,737.47 and 12,196.99 is: 18,278.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,503.17 : 18,737.47 = 12,196.99 : x
  2. Step 2: Convert to fraction form
    12,503.17/18,737.47 = 12,196.99/x
  3. Step 3: Cross multiply
    12,503.17x = 18,737.47 × 12,196.99
  4. Step 4: Simplify right side
    12,503.17x = 228,540,734.22
  5. Step 5: Solve for x
    x = 228,540,734.22/12,503.17
  6. Step 6: Final answer
    x = 18,278.62

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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.