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Finding the Fourth Proportional to 28,342.40, 39,110.84 and 16,404.88

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Solution

The fourth proportional to 28,342.40, 39,110.84 and 16,404.88 is: 22,637.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,342.40 : 39,110.84 = 16,404.88 : x
  2. Step 2: Convert to fraction form
    28,342.40/39,110.84 = 16,404.88/x
  3. Step 3: Cross multiply
    28,342.40x = 39,110.84 × 16,404.88
  4. Step 4: Simplify right side
    28,342.40x = 641,608,636.90
  5. Step 5: Solve for x
    x = 641,608,636.90/28,342.40
  6. Step 6: Final answer
    x = 22,637.77

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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.