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Finding the Fourth Proportional to 15,039.94, 20,756.98 and 8,581.17

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Solution

The fourth proportional to 15,039.94, 20,756.98 and 8,581.17 is: 11,843.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,039.94 : 20,756.98 = 8,581.17 : x
  2. Step 2: Convert to fraction form
    15,039.94/20,756.98 = 8,581.17/x
  3. Step 3: Cross multiply
    15,039.94x = 20,756.98 × 8,581.17
  4. Step 4: Simplify right side
    15,039.94x = 178,119,131.16
  5. Step 5: Solve for x
    x = 178,119,131.16/15,039.94
  6. Step 6: Final answer
    x = 11,843.07

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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.