Home / 27,890.20-38,488.26-15,314.92

Finding the Fourth Proportional to 27,890.20, 38,488.26 and 15,314.92

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Solution

The fourth proportional to 27,890.20, 38,488.26 and 15,314.92 is: 21,134.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,890.20 : 38,488.26 = 15,314.92 : x
  2. Step 2: Convert to fraction form
    27,890.20/38,488.26 = 15,314.92/x
  3. Step 3: Cross multiply
    27,890.20x = 38,488.26 × 15,314.92
  4. Step 4: Simplify right side
    27,890.20x = 589,444,622.84
  5. Step 5: Solve for x
    x = 589,444,622.84/27,890.20
  6. Step 6: Final answer
    x = 21,134.47

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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.