Home / 20,741.66-28,627.96-12,240.62

Finding the Fourth Proportional to 20,741.66, 28,627.96 and 12,240.62

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Solution

The fourth proportional to 20,741.66, 28,627.96 and 12,240.62 is: 16,894.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741.66 : 28,627.96 = 12,240.62 : x
  2. Step 2: Convert to fraction form
    20,741.66/28,627.96 = 12,240.62/x
  3. Step 3: Cross multiply
    20,741.66x = 28,627.96 × 12,240.62
  4. Step 4: Simplify right side
    20,741.66x = 350,423,979.74
  5. Step 5: Solve for x
    x = 350,423,979.74/20,741.66
  6. Step 6: Final answer
    x = 16,894.69

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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.