Home / 28,378.83-39,162.78-16,449.09

Finding the Fourth Proportional to 28,378.83, 39,162.78 and 16,449.09

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Solution

The fourth proportional to 28,378.83, 39,162.78 and 16,449.09 is: 22,699.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,378.83 : 39,162.78 = 16,449.09 : x
  2. Step 2: Convert to fraction form
    28,378.83/39,162.78 = 16,449.09/x
  3. Step 3: Cross multiply
    28,378.83x = 39,162.78 × 16,449.09
  4. Step 4: Simplify right side
    28,378.83x = 644,191,946.01
  5. Step 5: Solve for x
    x = 644,191,946.01/28,378.83
  6. Step 6: Final answer
    x = 22,699.73

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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.