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Finding the Fourth Proportional to 15,068.89, 20,794.98 and 8,355.50

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Solution

The fourth proportional to 15,068.89, 20,794.98 and 8,355.50 is: 11,530.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,068.89 : 20,794.98 = 8,355.50 : x
  2. Step 2: Convert to fraction form
    15,068.89/20,794.98 = 8,355.50/x
  3. Step 3: Cross multiply
    15,068.89x = 20,794.98 × 8,355.50
  4. Step 4: Simplify right side
    15,068.89x = 173,752,530.70
  5. Step 5: Solve for x
    x = 173,752,530.70/15,068.89
  6. Step 6: Final answer
    x = 11,530.55

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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.