Home / 11,310.90-15,623.46-8,690.46

Finding the Fourth Proportional to 11,310.90, 15,623.46 and 8,690.46

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Solution

The fourth proportional to 11,310.90, 15,623.46 and 8,690.46 is: 12,003.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,310.90 : 15,623.46 = 8,690.46 : x
  2. Step 2: Convert to fraction form
    11,310.90/15,623.46 = 8,690.46/x
  3. Step 3: Cross multiply
    11,310.90x = 15,623.46 × 8,690.46
  4. Step 4: Simplify right side
    11,310.90x = 135,775,054.19
  5. Step 5: Solve for x
    x = 135,775,054.19/11,310.90
  6. Step 6: Final answer
    x = 12,003.91

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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.