Home / 27,779.19-38,336.21-15,203.94

Finding the Fourth Proportional to 27,779.19, 38,336.21 and 15,203.94

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Solution

The fourth proportional to 27,779.19, 38,336.21 and 15,203.94 is: 20,981.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,779.19 : 38,336.21 = 15,203.94 : x
  2. Step 2: Convert to fraction form
    27,779.19/38,336.21 = 15,203.94/x
  3. Step 3: Cross multiply
    27,779.19x = 38,336.21 × 15,203.94
  4. Step 4: Simplify right side
    27,779.19x = 582,861,360.65
  5. Step 5: Solve for x
    x = 582,861,360.65/27,779.19
  6. Step 6: Final answer
    x = 20,981.94

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Double scale
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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.