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Finding the Fourth Proportional to 20,495.70, 30,726.18 and 6,447.06

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Solution

The fourth proportional to 20,495.70, 30,726.18 and 6,447.06 is: 9,665.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,495.70 : 30,726.18 = 6,447.06 : x
  2. Step 2: Convert to fraction form
    20,495.70/30,726.18 = 6,447.06/x
  3. Step 3: Cross multiply
    20,495.70x = 30,726.18 × 6,447.06
  4. Step 4: Simplify right side
    20,495.70x = 198,093,526.03
  5. Step 5: Solve for x
    x = 198,093,526.03/20,495.70
  6. Step 6: Final answer
    x = 9,665.13

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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.