Home / 27,979.20-38,609.28-16,041.60

Finding the Fourth Proportional to 27,979.20, 38,609.28 and 16,041.60

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Solution

The fourth proportional to 27,979.20, 38,609.28 and 16,041.60 is: 22,136.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,979.20 : 38,609.28 = 16,041.60 : x
  2. Step 2: Convert to fraction form
    27,979.20/38,609.28 = 16,041.60/x
  3. Step 3: Cross multiply
    27,979.20x = 38,609.28 × 16,041.60
  4. Step 4: Simplify right side
    27,979.20x = 619,354,626.05
  5. Step 5: Solve for x
    x = 619,354,626.05/27,979.20
  6. Step 6: Final answer
    x = 22,136.25

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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.