Home / 20,730.62-31,100.36-6,691.44

Finding the Fourth Proportional to 20,730.62, 31,100.36 and 6,691.44

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Solution

The fourth proportional to 20,730.62, 31,100.36 and 6,691.44 is: 10,038.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.62 : 31,100.36 = 6,691.44 : x
  2. Step 2: Convert to fraction form
    20,730.62/31,100.36 = 6,691.44/x
  3. Step 3: Cross multiply
    20,730.62x = 31,100.36 × 6,691.44
  4. Step 4: Simplify right side
    20,730.62x = 208,106,276.09
  5. Step 5: Solve for x
    x = 208,106,276.09/20,730.62
  6. Step 6: Final answer
    x = 10,038.60

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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.