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Finding the Fourth Proportional to 15,109.31, 20,834.04 and 10,330.03

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Solution

The fourth proportional to 15,109.31, 20,834.04 and 10,330.03 is: 14,243.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,109.31 : 20,834.04 = 10,330.03 : x
  2. Step 2: Convert to fraction form
    15,109.31/20,834.04 = 10,330.03/x
  3. Step 3: Cross multiply
    15,109.31x = 20,834.04 × 10,330.03
  4. Step 4: Simplify right side
    15,109.31x = 215,216,265.00
  5. Step 5: Solve for x
    x = 215,216,265.00/15,109.31
  6. Step 6: Final answer
    x = 14,243.95

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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.