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Finding the Fourth Proportional to 28,125.39, 38,813.07 and 15,550.14

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Solution

The fourth proportional to 28,125.39, 38,813.07 and 15,550.14 is: 21,459.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,125.39 : 38,813.07 = 15,550.14 : x
  2. Step 2: Convert to fraction form
    28,125.39/38,813.07 = 15,550.14/x
  3. Step 3: Cross multiply
    28,125.39x = 38,813.07 × 15,550.14
  4. Step 4: Simplify right side
    28,125.39x = 603,548,672.33
  5. Step 5: Solve for x
    x = 603,548,672.33/28,125.39
  6. Step 6: Final answer
    x = 21,459.21

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Find fourth proportional to 28,126.39, 38,814.45 and 15,551.14
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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.