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Finding the Fourth Proportional to 14,639, 20,201.81 and 7,924.68

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Solution

The fourth proportional to 14,639, 20,201.81 and 7,924.68 is: 10,936.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,639 : 20,201.81 = 7,924.68 : x
  2. Step 2: Convert to fraction form
    14,639/20,201.81 = 7,924.68/x
  3. Step 3: Cross multiply
    14,639x = 20,201.81 × 7,924.68
  4. Step 4: Simplify right side
    14,639x = 160,092,879.67
  5. Step 5: Solve for x
    x = 160,092,879.67/14,639
  6. Step 6: Final answer
    x = 10,936.05

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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.