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Finding the Fourth Proportional to 18,996.95, 28,503.63 and 10,230.12

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Solution

The fourth proportional to 18,996.95, 28,503.63 and 10,230.12 is: 15,349.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,996.95 : 28,503.63 = 10,230.12 : x
  2. Step 2: Convert to fraction form
    18,996.95/28,503.63 = 10,230.12/x
  3. Step 3: Cross multiply
    18,996.95x = 28,503.63 × 10,230.12
  4. Step 4: Simplify right side
    18,996.95x = 291,595,361.67
  5. Step 5: Solve for x
    x = 291,595,361.67/18,996.95
  6. Step 6: Final answer
    x = 15,349.59

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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.