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Finding the Fourth Proportional to 27,108.80, 37,408.80 and 15,172.16

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Solution

The fourth proportional to 27,108.80, 37,408.80 and 15,172.16 is: 20,936.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,108.80 : 37,408.80 = 15,172.16 : x
  2. Step 2: Convert to fraction form
    27,108.80/37,408.80 = 15,172.16/x
  3. Step 3: Cross multiply
    27,108.80x = 37,408.80 × 15,172.16
  4. Step 4: Simplify right side
    27,108.80x = 567,572,299.01
  5. Step 5: Solve for x
    x = 567,572,299.01/27,108.80
  6. Step 6: Final answer
    x = 20,936.83

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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.