Home / 27,847.39-38,425.85-15,911.50

Finding the Fourth Proportional to 27,847.39, 38,425.85 and 15,911.50

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Solution

The fourth proportional to 27,847.39, 38,425.85 and 15,911.50 is: 21,955.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,847.39 : 38,425.85 = 15,911.50 : x
  2. Step 2: Convert to fraction form
    27,847.39/38,425.85 = 15,911.50/x
  3. Step 3: Cross multiply
    27,847.39x = 38,425.85 × 15,911.50
  4. Step 4: Simplify right side
    27,847.39x = 611,412,855.99
  5. Step 5: Solve for x
    x = 611,412,855.99/27,847.39
  6. Step 6: Final answer
    x = 21,955.84

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Half scale
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Double scale
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Similar ratio
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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.