Home / 15,156.24-20,915.46-8,868.66

Finding the Fourth Proportional to 15,156.24, 20,915.46 and 8,868.66

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Solution

The fourth proportional to 15,156.24, 20,915.46 and 8,868.66 is: 12,238.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,156.24 : 20,915.46 = 8,868.66 : x
  2. Step 2: Convert to fraction form
    15,156.24/20,915.46 = 8,868.66/x
  3. Step 3: Cross multiply
    15,156.24x = 20,915.46 × 8,868.66
  4. Step 4: Simplify right side
    15,156.24x = 185,492,103.48
  5. Step 5: Solve for x
    x = 185,492,103.48/15,156.24
  6. Step 6: Final answer
    x = 12,238.66

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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.