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Finding the Fourth Proportional to 18,798.12, 28,210.83 and 15,144.48

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Solution

The fourth proportional to 18,798.12, 28,210.83 and 15,144.48 is: 22,727.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,798.12 : 28,210.83 = 15,144.48 : x
  2. Step 2: Convert to fraction form
    18,798.12/28,210.83 = 15,144.48/x
  3. Step 3: Cross multiply
    18,798.12x = 28,210.83 × 15,144.48
  4. Step 4: Simplify right side
    18,798.12x = 427,238,350.72
  5. Step 5: Solve for x
    x = 427,238,350.72/18,798.12
  6. Step 6: Final answer
    x = 22,727.72

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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.