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Finding the Fourth Proportional to 18,903.68, 28,370.10 and 15,214.94

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Solution

The fourth proportional to 18,903.68, 28,370.10 and 15,214.94 is: 22,834.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,903.68 : 28,370.10 = 15,214.94 : x
  2. Step 2: Convert to fraction form
    18,903.68/28,370.10 = 15,214.94/x
  3. Step 3: Cross multiply
    18,903.68x = 28,370.10 × 15,214.94
  4. Step 4: Simplify right side
    18,903.68x = 431,649,369.29
  5. Step 5: Solve for x
    x = 431,649,369.29/18,903.68
  6. Step 6: Final answer
    x = 22,834.14

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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.