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Finding the Fourth Proportional to 20,358.95, 30,536.98 and 6,318.63

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Solution

The fourth proportional to 20,358.95, 30,536.98 and 6,318.63 is: 9,477.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,358.95 : 30,536.98 = 6,318.63 : x
  2. Step 2: Convert to fraction form
    20,358.95/30,536.98 = 6,318.63/x
  3. Step 3: Cross multiply
    20,358.95x = 30,536.98 × 6,318.63
  4. Step 4: Simplify right side
    20,358.95x = 192,951,862.14
  5. Step 5: Solve for x
    x = 192,951,862.14/20,358.95
  6. Step 6: Final answer
    x = 9,477.50

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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.