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Finding the Fourth Proportional to 22,274.60, 33,411.90 and 13,980.20

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Solution

The fourth proportional to 22,274.60, 33,411.90 and 13,980.20 is: 20,970.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,274.60 : 33,411.90 = 13,980.20 : x
  2. Step 2: Convert to fraction form
    22,274.60/33,411.90 = 13,980.20/x
  3. Step 3: Cross multiply
    22,274.60x = 33,411.90 × 13,980.20
  4. Step 4: Simplify right side
    22,274.60x = 467,105,044.38
  5. Step 5: Solve for x
    x = 467,105,044.38/22,274.60
  6. Step 6: Final answer
    x = 20,970.30

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Half scale
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Double scale
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Similar ratio
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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.