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Finding the Fourth Proportional to 11,482.89, 15,838.87 and 8,290.93

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Solution

The fourth proportional to 11,482.89, 15,838.87 and 8,290.93 is: 11,436.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,482.89 : 15,838.87 = 8,290.93 : x
  2. Step 2: Convert to fraction form
    11,482.89/15,838.87 = 8,290.93/x
  3. Step 3: Cross multiply
    11,482.89x = 15,838.87 × 8,290.93
  4. Step 4: Simplify right side
    11,482.89x = 131,318,920.99
  5. Step 5: Solve for x
    x = 131,318,920.99/11,482.89
  6. Step 6: Final answer
    x = 11,436.05

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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.