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Finding the Fourth Proportional to 20,651.58, 30,973.28 and 10,117.08

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Solution

The fourth proportional to 20,651.58, 30,973.28 and 10,117.08 is: 15,173.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,651.58 : 30,973.28 = 10,117.08 : x
  2. Step 2: Convert to fraction form
    20,651.58/30,973.28 = 10,117.08/x
  3. Step 3: Cross multiply
    20,651.58x = 30,973.28 × 10,117.08
  4. Step 4: Simplify right side
    20,651.58x = 313,359,101.04
  5. Step 5: Solve for x
    x = 313,359,101.04/20,651.58
  6. Step 6: Final answer
    x = 15,173.61

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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.