Home / 10,087.80-15,131.70-8,994.30

Finding the Fourth Proportional to 10,087.80, 15,131.70 and 8,994.30

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Solution

The fourth proportional to 10,087.80, 15,131.70 and 8,994.30 is: 13,491.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,087.80 : 15,131.70 = 8,994.30 : x
  2. Step 2: Convert to fraction form
    10,087.80/15,131.70 = 8,994.30/x
  3. Step 3: Cross multiply
    10,087.80x = 15,131.70 × 8,994.30
  4. Step 4: Simplify right side
    10,087.80x = 136,099,049.31
  5. Step 5: Solve for x
    x = 136,099,049.31/10,087.80
  6. Step 6: Final answer
    x = 13,491.45

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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.