Home / 13,663.28-18,856.68-7,997.69

Finding the Fourth Proportional to 13,663.28, 18,856.68 and 7,997.69

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Solution

The fourth proportional to 13,663.28, 18,856.68 and 7,997.69 is: 11,037.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,663.28 : 18,856.68 = 7,997.69 : x
  2. Step 2: Convert to fraction form
    13,663.28/18,856.68 = 7,997.69/x
  3. Step 3: Cross multiply
    13,663.28x = 18,856.68 × 7,997.69
  4. Step 4: Simplify right side
    13,663.28x = 150,809,881.07
  5. Step 5: Solve for x
    x = 150,809,881.07/13,663.28
  6. Step 6: Final answer
    x = 11,037.60

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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.