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Finding the Fourth Proportional to 18,996.58, 28,503.06 and 10,229.74

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Solution

The fourth proportional to 18,996.58, 28,503.06 and 10,229.74 is: 15,349.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,996.58 : 28,503.06 = 10,229.74 : x
  2. Step 2: Convert to fraction form
    18,996.58/28,503.06 = 10,229.74/x
  3. Step 3: Cross multiply
    18,996.58x = 28,503.06 × 10,229.74
  4. Step 4: Simplify right side
    18,996.58x = 291,578,989.84
  5. Step 5: Solve for x
    x = 291,578,989.84/18,996.58
  6. Step 6: Final answer
    x = 15,349.03

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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.