Home / 15,155.84-20,915.01-8,441.55

Finding the Fourth Proportional to 15,155.84, 20,915.01 and 8,441.55

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Solution

The fourth proportional to 15,155.84, 20,915.01 and 8,441.55 is: 11,649.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,155.84 : 20,915.01 = 8,441.55 : x
  2. Step 2: Convert to fraction form
    15,155.84/20,915.01 = 8,441.55/x
  3. Step 3: Cross multiply
    15,155.84x = 20,915.01 × 8,441.55
  4. Step 4: Simplify right side
    15,155.84x = 176,555,102.67
  5. Step 5: Solve for x
    x = 176,555,102.67/15,155.84
  6. Step 6: Final answer
    x = 11,649.31

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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.