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Finding the Fourth Proportional to 20,154.92, 30,237.84 and 7,008.02

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Solution

The fourth proportional to 20,154.92, 30,237.84 and 7,008.02 is: 10,513.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,154.92 : 30,237.84 = 7,008.02 : x
  2. Step 2: Convert to fraction form
    20,154.92/30,237.84 = 7,008.02/x
  3. Step 3: Cross multiply
    20,154.92x = 30,237.84 × 7,008.02
  4. Step 4: Simplify right side
    20,154.92x = 211,907,387.48
  5. Step 5: Solve for x
    x = 211,907,387.48/20,154.92
  6. Step 6: Final answer
    x = 10,513.93

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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.