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Finding the Fourth Proportional to 22,090, 30,484.20 and 12,154.64

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Solution

The fourth proportional to 22,090, 30,484.20 and 12,154.64 is: 16,773.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,090 : 30,484.20 = 12,154.64 : x
  2. Step 2: Convert to fraction form
    22,090/30,484.20 = 12,154.64/x
  3. Step 3: Cross multiply
    22,090x = 30,484.20 × 12,154.64
  4. Step 4: Simplify right side
    22,090x = 370,524,476.69
  5. Step 5: Solve for x
    x = 370,524,476.69/22,090
  6. Step 6: Final answer
    x = 16,773.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.