Home / 27,986.72-38,621.60-15,239.70

Finding the Fourth Proportional to 27,986.72, 38,621.60 and 15,239.70

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Solution

The fourth proportional to 27,986.72, 38,621.60 and 15,239.70 is: 21,030.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,986.72 : 38,621.60 = 15,239.70 : x
  2. Step 2: Convert to fraction form
    27,986.72/38,621.60 = 15,239.70/x
  3. Step 3: Cross multiply
    27,986.72x = 38,621.60 × 15,239.70
  4. Step 4: Simplify right side
    27,986.72x = 588,581,597.52
  5. Step 5: Solve for x
    x = 588,581,597.52/27,986.72
  6. Step 6: Final answer
    x = 21,030.75

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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.