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Finding the Fourth Proportional to 22,005.57, 32,957.53 and 13,221.12

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Solution

The fourth proportional to 22,005.57, 32,957.53 and 13,221.12 is: 19,801.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,005.57 : 32,957.53 = 13,221.12 : x
  2. Step 2: Convert to fraction form
    22,005.57/32,957.53 = 13,221.12/x
  3. Step 3: Cross multiply
    22,005.57x = 32,957.53 × 13,221.12
  4. Step 4: Simplify right side
    22,005.57x = 435,735,459.03
  5. Step 5: Solve for x
    x = 435,735,459.03/22,005.57
  6. Step 6: Final answer
    x = 19,801.14

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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.