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Finding the Fourth Proportional to 22,090.96, 30,484.62 and 12,657.70

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Solution

The fourth proportional to 22,090.96, 30,484.62 and 12,657.70 is: 17,467.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,090.96 : 30,484.62 = 12,657.70 : x
  2. Step 2: Convert to fraction form
    22,090.96/30,484.62 = 12,657.70/x
  3. Step 3: Cross multiply
    22,090.96x = 30,484.62 × 12,657.70
  4. Step 4: Simplify right side
    22,090.96x = 385,865,174.57
  5. Step 5: Solve for x
    x = 385,865,174.57/22,090.96
  6. Step 6: Final answer
    x = 17,467.11

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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.