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Finding the Fourth Proportional to 30,393.70, 41,948.17 and 17,818.45

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Solution

The fourth proportional to 30,393.70, 41,948.17 and 17,818.45 is: 24,592.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,393.70 : 41,948.17 = 17,818.45 : x
  2. Step 2: Convert to fraction form
    30,393.70/41,948.17 = 17,818.45/x
  3. Step 3: Cross multiply
    30,393.70x = 41,948.17 × 17,818.45
  4. Step 4: Simplify right side
    30,393.70x = 747,451,556.51
  5. Step 5: Solve for x
    x = 747,451,556.51/30,393.70
  6. Step 6: Final answer
    x = 24,592.32

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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.