Home / 15,496.42-21,384.30-8,422.60

Finding the Fourth Proportional to 15,496.42, 21,384.30 and 8,422.60

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Solution

The fourth proportional to 15,496.42, 21,384.30 and 8,422.60 is: 11,622.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,496.42 : 21,384.30 = 8,422.60 : x
  2. Step 2: Convert to fraction form
    15,496.42/21,384.30 = 8,422.60/x
  3. Step 3: Cross multiply
    15,496.42x = 21,384.30 × 8,422.60
  4. Step 4: Simplify right side
    15,496.42x = 180,111,405.18
  5. Step 5: Solve for x
    x = 180,111,405.18/15,496.42
  6. Step 6: Final answer
    x = 11,622.78

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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.