Home / 27,653.82-38,162.16-15,078.57

Finding the Fourth Proportional to 27,653.82, 38,162.16 and 15,078.57

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Solution

The fourth proportional to 27,653.82, 38,162.16 and 15,078.57 is: 20,808.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,653.82 : 38,162.16 = 15,078.57 : x
  2. Step 2: Convert to fraction form
    27,653.82/38,162.16 = 15,078.57/x
  3. Step 3: Cross multiply
    27,653.82x = 38,162.16 × 15,078.57
  4. Step 4: Simplify right side
    27,653.82x = 575,430,800.91
  5. Step 5: Solve for x
    x = 575,430,800.91/27,653.82
  6. Step 6: Final answer
    x = 20,808.37

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Half scale
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Double scale
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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.