Home / 15,156.28-20,915.61-8,441.99

Finding the Fourth Proportional to 15,156.28, 20,915.61 and 8,441.99

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Solution

The fourth proportional to 15,156.28, 20,915.61 and 8,441.99 is: 11,649.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,156.28 : 20,915.61 = 8,441.99 : x
  2. Step 2: Convert to fraction form
    15,156.28/20,915.61 = 8,441.99/x
  3. Step 3: Cross multiply
    15,156.28x = 20,915.61 × 8,441.99
  4. Step 4: Simplify right side
    15,156.28x = 176,569,370.46
  5. Step 5: Solve for x
    x = 176,569,370.46/15,156.28
  6. Step 6: Final answer
    x = 11,649.91

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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.