Home / 28,319.91-39,077.69-16,378.89

Finding the Fourth Proportional to 28,319.91, 39,077.69 and 16,378.89

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Solution

The fourth proportional to 28,319.91, 39,077.69 and 16,378.89 is: 22,600.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.91 : 39,077.69 = 16,378.89 : x
  2. Step 2: Convert to fraction form
    28,319.91/39,077.69 = 16,378.89/x
  3. Step 3: Cross multiply
    28,319.91x = 39,077.69 × 16,378.89
  4. Step 4: Simplify right side
    28,319.91x = 640,049,104.07
  5. Step 5: Solve for x
    x = 640,049,104.07/28,319.91
  6. Step 6: Final answer
    x = 22,600.68

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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.