Home / 15,155.61-20,915.01-8,441.82

Finding the Fourth Proportional to 15,155.61, 20,915.01 and 8,441.82

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Solution

The fourth proportional to 15,155.61, 20,915.01 and 8,441.82 is: 11,649.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,155.61 : 20,915.01 = 8,441.82 : x
  2. Step 2: Convert to fraction form
    15,155.61/20,915.01 = 8,441.82/x
  3. Step 3: Cross multiply
    15,155.61x = 20,915.01 × 8,441.82
  4. Step 4: Simplify right side
    15,155.61x = 176,560,749.72
  5. Step 5: Solve for x
    x = 176,560,749.72/15,155.61
  6. Step 6: Final answer
    x = 11,649.86

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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.