Home / 20,377.26-30,547.62-12,960.90

Finding the Fourth Proportional to 20,377.26, 30,547.62 and 12,960.90

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Solution

The fourth proportional to 20,377.26, 30,547.62 and 12,960.90 is: 19,429.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,377.26 : 30,547.62 = 12,960.90 : x
  2. Step 2: Convert to fraction form
    20,377.26/30,547.62 = 12,960.90/x
  3. Step 3: Cross multiply
    20,377.26x = 30,547.62 × 12,960.90
  4. Step 4: Simplify right side
    20,377.26x = 395,924,648.06
  5. Step 5: Solve for x
    x = 395,924,648.06/20,377.26
  6. Step 6: Final answer
    x = 19,429.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.