Home / 13,775.88-20,663.46-3,915.84

Finding the Fourth Proportional to 13,775.88, 20,663.46 and 3,915.84

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Solution

The fourth proportional to 13,775.88, 20,663.46 and 3,915.84 is: 5,873.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,775.88 : 20,663.46 = 3,915.84 : x
  2. Step 2: Convert to fraction form
    13,775.88/20,663.46 = 3,915.84/x
  3. Step 3: Cross multiply
    13,775.88x = 20,663.46 × 3,915.84
  4. Step 4: Simplify right side
    13,775.88x = 80,914,803.21
  5. Step 5: Solve for x
    x = 80,914,803.21/13,775.88
  6. Step 6: Final answer
    x = 5,873.66

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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.