Home / 15,709.27-21,678.79-8,997.12

Finding the Fourth Proportional to 15,709.27, 21,678.79 and 8,997.12

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Solution

The fourth proportional to 15,709.27, 21,678.79 and 8,997.12 is: 12,416.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,709.27 : 21,678.79 = 8,997.12 : x
  2. Step 2: Convert to fraction form
    15,709.27/21,678.79 = 8,997.12/x
  3. Step 3: Cross multiply
    15,709.27x = 21,678.79 × 8,997.12
  4. Step 4: Simplify right side
    15,709.27x = 195,046,652.59
  5. Step 5: Solve for x
    x = 195,046,652.59/15,709.27
  6. Step 6: Final answer
    x = 12,416.02

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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.