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Finding the Fourth Proportional to 30,395.79, 41,949.90 and 17,820.54

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Solution

The fourth proportional to 30,395.79, 41,949.90 and 17,820.54 is: 24,594.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,395.79 : 41,949.90 = 17,820.54 : x
  2. Step 2: Convert to fraction form
    30,395.79/41,949.90 = 17,820.54/x
  3. Step 3: Cross multiply
    30,395.79x = 41,949.90 × 17,820.54
  4. Step 4: Simplify right side
    30,395.79x = 747,569,870.95
  5. Step 5: Solve for x
    x = 747,569,870.95/30,395.79
  6. Step 6: Final answer
    x = 24,594.52

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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.