Home / 27,208.50-37,561.81-21,145.19

Finding the Fourth Proportional to 27,208.50, 37,561.81 and 21,145.19

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Solution

The fourth proportional to 27,208.50, 37,561.81 and 21,145.19 is: 29,191.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,208.50 : 37,561.81 = 21,145.19 : x
  2. Step 2: Convert to fraction form
    27,208.50/37,561.81 = 21,145.19/x
  3. Step 3: Cross multiply
    27,208.50x = 37,561.81 × 21,145.19
  4. Step 4: Simplify right side
    27,208.50x = 794,251,609.19
  5. Step 5: Solve for x
    x = 794,251,609.19/27,208.50
  6. Step 6: Final answer
    x = 29,191.30

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Half scale
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Double scale
Find fourth proportional to 27,209.50, 37,563.19 and 21,146.19
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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.