Home / 15,155.38-20,915.07-8,441.01

Finding the Fourth Proportional to 15,155.38, 20,915.07 and 8,441.01

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Solution

The fourth proportional to 15,155.38, 20,915.07 and 8,441.01 is: 11,648.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,155.38 : 20,915.07 = 8,441.01 : x
  2. Step 2: Convert to fraction form
    15,155.38/20,915.07 = 8,441.01/x
  3. Step 3: Cross multiply
    15,155.38x = 20,915.07 × 8,441.01
  4. Step 4: Simplify right side
    15,155.38x = 176,544,236.59
  5. Step 5: Solve for x
    x = 176,544,236.59/15,155.38
  6. Step 6: Final answer
    x = 11,648.95

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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.