Home / 15,212.07-20,991.28-8,496.76

Finding the Fourth Proportional to 15,212.07, 20,991.28 and 8,496.76

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Solution

The fourth proportional to 15,212.07, 20,991.28 and 8,496.76 is: 11,724.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,212.07 : 20,991.28 = 8,496.76 : x
  2. Step 2: Convert to fraction form
    15,212.07/20,991.28 = 8,496.76/x
  3. Step 3: Cross multiply
    15,212.07x = 20,991.28 × 8,496.76
  4. Step 4: Simplify right side
    15,212.07x = 178,357,868.25
  5. Step 5: Solve for x
    x = 178,357,868.25/15,212.07
  6. Step 6: Final answer
    x = 11,724.76

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Half scale
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Double scale
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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.