Home / 15,188.34-20,961.53-8,476.30

Finding the Fourth Proportional to 15,188.34, 20,961.53 and 8,476.30

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Solution

The fourth proportional to 15,188.34, 20,961.53 and 8,476.30 is: 11,698.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,188.34 : 20,961.53 = 8,476.30 : x
  2. Step 2: Convert to fraction form
    15,188.34/20,961.53 = 8,476.30/x
  3. Step 3: Cross multiply
    15,188.34x = 20,961.53 × 8,476.30
  4. Step 4: Simplify right side
    15,188.34x = 177,676,216.74
  5. Step 5: Solve for x
    x = 177,676,216.74/15,188.34
  6. Step 6: Final answer
    x = 11,698.20

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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.