Home / 28,342.48-39,112.20-16,404.88

Finding the Fourth Proportional to 28,342.48, 39,112.20 and 16,404.88

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Solution

The fourth proportional to 28,342.48, 39,112.20 and 16,404.88 is: 22,638.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,342.48 : 39,112.20 = 16,404.88 : x
  2. Step 2: Convert to fraction form
    28,342.48/39,112.20 = 16,404.88/x
  3. Step 3: Cross multiply
    28,342.48x = 39,112.20 × 16,404.88
  4. Step 4: Simplify right side
    28,342.48x = 641,630,947.54
  5. Step 5: Solve for x
    x = 641,630,947.54/28,342.48
  6. Step 6: Final answer
    x = 22,638.49

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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.