Home / 13,775.16-20,658.60-3,915.24

Finding the Fourth Proportional to 13,775.16, 20,658.60 and 3,915.24

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Solution

The fourth proportional to 13,775.16, 20,658.60 and 3,915.24 is: 5,871.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,775.16 : 20,658.60 = 3,915.24 : x
  2. Step 2: Convert to fraction form
    13,775.16/20,658.60 = 3,915.24/x
  3. Step 3: Cross multiply
    13,775.16x = 20,658.60 × 3,915.24
  4. Step 4: Simplify right side
    13,775.16x = 80,883,377.06
  5. Step 5: Solve for x
    x = 80,883,377.06/13,775.16
  6. Step 6: Final answer
    x = 5,871.68

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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.