Home / 27,765.16-38,311.38-15,828.72

Finding the Fourth Proportional to 27,765.16, 38,311.38 and 15,828.72

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Solution

The fourth proportional to 27,765.16, 38,311.38 and 15,828.72 is: 21,841.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,765.16 : 38,311.38 = 15,828.72 : x
  2. Step 2: Convert to fraction form
    27,765.16/38,311.38 = 15,828.72/x
  3. Step 3: Cross multiply
    27,765.16x = 38,311.38 × 15,828.72
  4. Step 4: Simplify right side
    27,765.16x = 606,420,106.83
  5. Step 5: Solve for x
    x = 606,420,106.83/27,765.16
  6. Step 6: Final answer
    x = 21,841.04

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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.