Home / 28,747.46-39,670.53-16,169.78

Finding the Fourth Proportional to 28,747.46, 39,670.53 and 16,169.78

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Solution

The fourth proportional to 28,747.46, 39,670.53 and 16,169.78 is: 22,313.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,747.46 : 39,670.53 = 16,169.78 : x
  2. Step 2: Convert to fraction form
    28,747.46/39,670.53 = 16,169.78/x
  3. Step 3: Cross multiply
    28,747.46x = 39,670.53 × 16,169.78
  4. Step 4: Simplify right side
    28,747.46x = 641,463,781.12
  5. Step 5: Solve for x
    x = 641,463,781.12/28,747.46
  6. Step 6: Final answer
    x = 22,313.75

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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.