Home / 10,008.12-13,811.21-5,531.87

Finding the Fourth Proportional to 10,008.12, 13,811.21 and 5,531.87

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Solution

The fourth proportional to 10,008.12, 13,811.21 and 5,531.87 is: 7,633.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,008.12 : 13,811.21 = 5,531.87 : x
  2. Step 2: Convert to fraction form
    10,008.12/13,811.21 = 5,531.87/x
  3. Step 3: Cross multiply
    10,008.12x = 13,811.21 × 5,531.87
  4. Step 4: Simplify right side
    10,008.12x = 76,401,825.13
  5. Step 5: Solve for x
    x = 76,401,825.13/10,008.12
  6. Step 6: Final answer
    x = 7,633.98

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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.