Home / 27,890.24-38,488.57-15,143.42

Finding the Fourth Proportional to 27,890.24, 38,488.57 and 15,143.42

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Solution

The fourth proportional to 27,890.24, 38,488.57 and 15,143.42 is: 20,897.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,890.24 : 38,488.57 = 15,143.42 : x
  2. Step 2: Convert to fraction form
    27,890.24/38,488.57 = 15,143.42/x
  3. Step 3: Cross multiply
    27,890.24x = 38,488.57 × 15,143.42
  4. Step 4: Simplify right side
    27,890.24x = 582,848,639.07
  5. Step 5: Solve for x
    x = 582,848,639.07/27,890.24
  6. Step 6: Final answer
    x = 20,897.94

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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.