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Finding the Fourth Proportional to 27,107.80, 37,405.50 and 15,170.20

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Solution

The fourth proportional to 27,107.80, 37,405.50 and 15,170.20 is: 20,933.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,107.80 : 37,405.50 = 15,170.20 : x
  2. Step 2: Convert to fraction form
    27,107.80/37,405.50 = 15,170.20/x
  3. Step 3: Cross multiply
    27,107.80x = 37,405.50 × 15,170.20
  4. Step 4: Simplify right side
    27,107.80x = 567,448,916.10
  5. Step 5: Solve for x
    x = 567,448,916.10/27,107.80
  6. Step 6: Final answer
    x = 20,933.05

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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.