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Finding the Fourth Proportional to 22,090.70, 30,445.80 and 15,354.74

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Solution

The fourth proportional to 22,090.70, 30,445.80 and 15,354.74 is: 21,162.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,090.70 : 30,445.80 = 15,354.74 : x
  2. Step 2: Convert to fraction form
    22,090.70/30,445.80 = 15,354.74/x
  3. Step 3: Cross multiply
    22,090.70x = 30,445.80 × 15,354.74
  4. Step 4: Simplify right side
    22,090.70x = 467,487,343.09
  5. Step 5: Solve for x
    x = 467,487,343.09/22,090.70
  6. Step 6: Final answer
    x = 21,162.18

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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.