Home / 27,866.61-38,455.87-15,119.79

Finding the Fourth Proportional to 27,866.61, 38,455.87 and 15,119.79

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Solution

The fourth proportional to 27,866.61, 38,455.87 and 15,119.79 is: 20,865.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,866.61 : 38,455.87 = 15,119.79 : x
  2. Step 2: Convert to fraction form
    27,866.61/38,455.87 = 15,119.79/x
  3. Step 3: Cross multiply
    27,866.61x = 38,455.87 × 15,119.79
  4. Step 4: Simplify right side
    27,866.61x = 581,444,749.70
  5. Step 5: Solve for x
    x = 581,444,749.70/27,866.61
  6. Step 6: Final answer
    x = 20,865.28

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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.