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Finding the Fourth Proportional to 22,109.60, 33,155.60 and 7,314.40

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Solution

The fourth proportional to 22,109.60, 33,155.60 and 7,314.40 is: 10,968.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,109.60 : 33,155.60 = 7,314.40 : x
  2. Step 2: Convert to fraction form
    22,109.60/33,155.60 = 7,314.40/x
  3. Step 3: Cross multiply
    22,109.60x = 33,155.60 × 7,314.40
  4. Step 4: Simplify right side
    22,109.60x = 242,513,320.64
  5. Step 5: Solve for x
    x = 242,513,320.64/22,109.60
  6. Step 6: Final answer
    x = 10,968.69

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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.