Home / 15,196.30-20,970.40-8,297.20

Finding the Fourth Proportional to 15,196.30, 20,970.40 and 8,297.20

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Solution

The fourth proportional to 15,196.30, 20,970.40 and 8,297.20 is: 11,449.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,196.30 : 20,970.40 = 8,297.20 : x
  2. Step 2: Convert to fraction form
    15,196.30/20,970.40 = 8,297.20/x
  3. Step 3: Cross multiply
    15,196.30x = 20,970.40 × 8,297.20
  4. Step 4: Simplify right side
    15,196.30x = 173,995,602.88
  5. Step 5: Solve for x
    x = 173,995,602.88/15,196.30
  6. Step 6: Final answer
    x = 11,449.87

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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.