Home / 27,121.52-37,445.10-18,620.91

Finding the Fourth Proportional to 27,121.52, 37,445.10 and 18,620.91

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Solution

The fourth proportional to 27,121.52, 37,445.10 and 18,620.91 is: 25,708.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,121.52 : 37,445.10 = 18,620.91 : x
  2. Step 2: Convert to fraction form
    27,121.52/37,445.10 = 18,620.91/x
  3. Step 3: Cross multiply
    27,121.52x = 37,445.10 × 18,620.91
  4. Step 4: Simplify right side
    27,121.52x = 697,261,837.04
  5. Step 5: Solve for x
    x = 697,261,837.04/27,121.52
  6. Step 6: Final answer
    x = 25,708.81

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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.