Home / 28,018.60-38,667.78-16,085.80

Finding the Fourth Proportional to 28,018.60, 38,667.78 and 16,085.80

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Solution

The fourth proportional to 28,018.60, 38,667.78 and 16,085.80 is: 22,199.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018.60 : 38,667.78 = 16,085.80 : x
  2. Step 2: Convert to fraction form
    28,018.60/38,667.78 = 16,085.80/x
  3. Step 3: Cross multiply
    28,018.60x = 38,667.78 × 16,085.80
  4. Step 4: Simplify right side
    28,018.60x = 622,002,175.52
  5. Step 5: Solve for x
    x = 622,002,175.52/28,018.60
  6. Step 6: Final answer
    x = 22,199.62

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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.