Home / 11,257.09-15,520.35-7,714.15

Finding the Fourth Proportional to 11,257.09, 15,520.35 and 7,714.15

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Solution

The fourth proportional to 11,257.09, 15,520.35 and 7,714.15 is: 10,635.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,257.09 : 15,520.35 = 7,714.15 : x
  2. Step 2: Convert to fraction form
    11,257.09/15,520.35 = 7,714.15/x
  3. Step 3: Cross multiply
    11,257.09x = 15,520.35 × 7,714.15
  4. Step 4: Simplify right side
    11,257.09x = 119,726,307.95
  5. Step 5: Solve for x
    x = 119,726,307.95/11,257.09
  6. Step 6: Final answer
    x = 10,635.64

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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.