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Finding the Fourth Proportional to 30,641.40, 45,951.30 and 10,920.60

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Solution

The fourth proportional to 30,641.40, 45,951.30 and 10,920.60 is: 16,377.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,641.40 : 45,951.30 = 10,920.60 : x
  2. Step 2: Convert to fraction form
    30,641.40/45,951.30 = 10,920.60/x
  3. Step 3: Cross multiply
    30,641.40x = 45,951.30 × 10,920.60
  4. Step 4: Simplify right side
    30,641.40x = 501,815,766.78
  5. Step 5: Solve for x
    x = 501,815,766.78/30,641.40
  6. Step 6: Final answer
    x = 16,377.05

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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.