Home / 20,746.20-31,070.70-14,136.60

Finding the Fourth Proportional to 20,746.20, 31,070.70 and 14,136.60

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Solution

The fourth proportional to 20,746.20, 31,070.70 and 14,136.60 is: 21,171.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.20 : 31,070.70 = 14,136.60 : x
  2. Step 2: Convert to fraction form
    20,746.20/31,070.70 = 14,136.60/x
  3. Step 3: Cross multiply
    20,746.20x = 31,070.70 × 14,136.60
  4. Step 4: Simplify right side
    20,746.20x = 439,234,057.62
  5. Step 5: Solve for x
    x = 439,234,057.62/20,746.20
  6. Step 6: Final answer
    x = 21,171.78

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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.