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Finding the Fourth Proportional to 20,043.71, 30,070.68 and 11,730.71

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Solution

The fourth proportional to 20,043.71, 30,070.68 and 11,730.71 is: 17,599.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,043.71 : 30,070.68 = 11,730.71 : x
  2. Step 2: Convert to fraction form
    20,043.71/30,070.68 = 11,730.71/x
  3. Step 3: Cross multiply
    20,043.71x = 30,070.68 × 11,730.71
  4. Step 4: Simplify right side
    20,043.71x = 352,750,276.23
  5. Step 5: Solve for x
    x = 352,750,276.23/20,043.71
  6. Step 6: Final answer
    x = 17,599.06

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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.