Home / 11,720.15-16,173.69-6,342.47

Finding the Fourth Proportional to 11,720.15, 16,173.69 and 6,342.47

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Solution

The fourth proportional to 11,720.15, 16,173.69 and 6,342.47 is: 8,752.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.15 : 16,173.69 = 6,342.47 : x
  2. Step 2: Convert to fraction form
    11,720.15/16,173.69 = 6,342.47/x
  3. Step 3: Cross multiply
    11,720.15x = 16,173.69 × 6,342.47
  4. Step 4: Simplify right side
    11,720.15x = 102,581,143.61
  5. Step 5: Solve for x
    x = 102,581,143.61/11,720.15
  6. Step 6: Final answer
    x = 8,752.55

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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.