Home / 30,350.70-41,878.62-16,920.90

Finding the Fourth Proportional to 30,350.70, 41,878.62 and 16,920.90

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Solution

The fourth proportional to 30,350.70, 41,878.62 and 16,920.90 is: 23,347.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,350.70 : 41,878.62 = 16,920.90 : x
  2. Step 2: Convert to fraction form
    30,350.70/41,878.62 = 16,920.90/x
  3. Step 3: Cross multiply
    30,350.70x = 41,878.62 × 16,920.90
  4. Step 4: Simplify right side
    30,350.70x = 708,623,941.16
  5. Step 5: Solve for x
    x = 708,623,941.16/30,350.70
  6. Step 6: Final answer
    x = 23,347.86

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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.