Home / 15,215.32-20,996.96-8,501.60

Finding the Fourth Proportional to 15,215.32, 20,996.96 and 8,501.60

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Solution

The fourth proportional to 15,215.32, 20,996.96 and 8,501.60 is: 11,732.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215.32 : 20,996.96 = 8,501.60 : x
  2. Step 2: Convert to fraction form
    15,215.32/20,996.96 = 8,501.60/x
  3. Step 3: Cross multiply
    15,215.32x = 20,996.96 × 8,501.60
  4. Step 4: Simplify right side
    15,215.32x = 178,507,755.14
  5. Step 5: Solve for x
    x = 178,507,755.14/15,215.32
  6. Step 6: Final answer
    x = 11,732.11

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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.