Home / 10,517.58-15,786.75-5,587.20

Finding the Fourth Proportional to 10,517.58, 15,786.75 and 5,587.20

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Solution

The fourth proportional to 10,517.58, 15,786.75 and 5,587.20 is: 8,386.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,517.58 : 15,786.75 = 5,587.20 : x
  2. Step 2: Convert to fraction form
    10,517.58/15,786.75 = 5,587.20/x
  3. Step 3: Cross multiply
    10,517.58x = 15,786.75 × 5,587.20
  4. Step 4: Simplify right side
    10,517.58x = 88,203,729.60
  5. Step 5: Solve for x
    x = 88,203,729.60/10,517.58
  6. Step 6: Final answer
    x = 8,386.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.