Home / 15,215.06-20,997.21-8,501.43

Finding the Fourth Proportional to 15,215.06, 20,997.21 and 8,501.43

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Solution

The fourth proportional to 15,215.06, 20,997.21 and 8,501.43 is: 11,732.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215.06 : 20,997.21 = 8,501.43 : x
  2. Step 2: Convert to fraction form
    15,215.06/20,997.21 = 8,501.43/x
  3. Step 3: Cross multiply
    15,215.06x = 20,997.21 × 8,501.43
  4. Step 4: Simplify right side
    15,215.06x = 178,506,311.01
  5. Step 5: Solve for x
    x = 178,506,311.01/15,215.06
  6. Step 6: Final answer
    x = 11,732.21

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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.