Home / 15,215.57-20,997.90-8,501.93

Finding the Fourth Proportional to 15,215.57, 20,997.90 and 8,501.93

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Solution

The fourth proportional to 15,215.57, 20,997.90 and 8,501.93 is: 11,732.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215.57 : 20,997.90 = 8,501.93 : x
  2. Step 2: Convert to fraction form
    15,215.57/20,997.90 = 8,501.93/x
  3. Step 3: Cross multiply
    15,215.57x = 20,997.90 × 8,501.93
  4. Step 4: Simplify right side
    15,215.57x = 178,522,570.96
  5. Step 5: Solve for x
    x = 178,522,570.96/15,215.57
  6. Step 6: Final answer
    x = 11,732.89

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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.