Home / 13,856.28-20,772.54-5,086.68

Finding the Fourth Proportional to 13,856.28, 20,772.54 and 5,086.68

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Solution

The fourth proportional to 13,856.28, 20,772.54 and 5,086.68 is: 7,625.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,856.28 : 20,772.54 = 5,086.68 : x
  2. Step 2: Convert to fraction form
    13,856.28/20,772.54 = 5,086.68/x
  3. Step 3: Cross multiply
    13,856.28x = 20,772.54 × 5,086.68
  4. Step 4: Simplify right side
    13,856.28x = 105,663,263.77
  5. Step 5: Solve for x
    x = 105,663,263.77/13,856.28
  6. Step 6: Final answer
    x = 7,625.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.