Home / 27,825.69-38,399.60-15,078.87

Finding the Fourth Proportional to 27,825.69, 38,399.60 and 15,078.87

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Solution

The fourth proportional to 27,825.69, 38,399.60 and 15,078.87 is: 20,808.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,825.69 : 38,399.60 = 15,078.87 : x
  2. Step 2: Convert to fraction form
    27,825.69/38,399.60 = 15,078.87/x
  3. Step 3: Cross multiply
    27,825.69x = 38,399.60 × 15,078.87
  4. Step 4: Simplify right side
    27,825.69x = 579,022,501.06
  5. Step 5: Solve for x
    x = 579,022,501.06/27,825.69
  6. Step 6: Final answer
    x = 20,808.92

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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.