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Finding the Fourth Proportional to 28,649.96, 39,522.02 and 18,019.56

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Solution

The fourth proportional to 28,649.96, 39,522.02 and 18,019.56 is: 24,857.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,649.96 : 39,522.02 = 18,019.56 : x
  2. Step 2: Convert to fraction form
    28,649.96/39,522.02 = 18,019.56/x
  3. Step 3: Cross multiply
    28,649.96x = 39,522.02 × 18,019.56
  4. Step 4: Simplify right side
    28,649.96x = 712,169,410.71
  5. Step 5: Solve for x
    x = 712,169,410.71/28,649.96
  6. Step 6: Final answer
    x = 24,857.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.