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Finding the Fourth Proportional to 22,011.60, 32,979.60 and 10,300.80

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Solution

The fourth proportional to 22,011.60, 32,979.60 and 10,300.80 is: 15,433.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,011.60 : 32,979.60 = 10,300.80 : x
  2. Step 2: Convert to fraction form
    22,011.60/32,979.60 = 10,300.80/x
  3. Step 3: Cross multiply
    22,011.60x = 32,979.60 × 10,300.80
  4. Step 4: Simplify right side
    22,011.60x = 339,716,263.68
  5. Step 5: Solve for x
    x = 339,716,263.68/22,011.60
  6. Step 6: Final answer
    x = 15,433.51

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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.