Home / 20,108.61-27,749.86-12,149.35

Finding the Fourth Proportional to 20,108.61, 27,749.86 and 12,149.35

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Solution

The fourth proportional to 20,108.61, 27,749.86 and 12,149.35 is: 16,766.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.61 : 27,749.86 = 12,149.35 : x
  2. Step 2: Convert to fraction form
    20,108.61/27,749.86 = 12,149.35/x
  3. Step 3: Cross multiply
    20,108.61x = 27,749.86 × 12,149.35
  4. Step 4: Simplify right side
    20,108.61x = 337,142,661.84
  5. Step 5: Solve for x
    x = 337,142,661.84/20,108.61
  6. Step 6: Final answer
    x = 16,766.08

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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.