Home / 10,080.21-15,122.75-9,912.84

Finding the Fourth Proportional to 10,080.21, 15,122.75 and 9,912.84

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Solution

The fourth proportional to 10,080.21, 15,122.75 and 9,912.84 is: 14,871.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,080.21 : 15,122.75 = 9,912.84 : x
  2. Step 2: Convert to fraction form
    10,080.21/15,122.75 = 9,912.84/x
  3. Step 3: Cross multiply
    10,080.21x = 15,122.75 × 9,912.84
  4. Step 4: Simplify right side
    10,080.21x = 149,909,401.11
  5. Step 5: Solve for x
    x = 149,909,401.11/10,080.21
  6. Step 6: Final answer
    x = 14,871.65

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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.