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Finding the Fourth Proportional to 20,038.93, 30,081.68 and 11,724.91

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Solution

The fourth proportional to 20,038.93, 30,081.68 and 11,724.91 is: 17,600.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,038.93 : 30,081.68 = 11,724.91 : x
  2. Step 2: Convert to fraction form
    20,038.93/30,081.68 = 11,724.91/x
  3. Step 3: Cross multiply
    20,038.93x = 30,081.68 × 11,724.91
  4. Step 4: Simplify right side
    20,038.93x = 352,704,900.79
  5. Step 5: Solve for x
    x = 352,704,900.79/20,038.93
  6. Step 6: Final answer
    x = 17,600.99

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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.