Home / 20,659.76-28,510.90-11,228.94

Finding the Fourth Proportional to 20,659.76, 28,510.90 and 11,228.94

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Solution

The fourth proportional to 20,659.76, 28,510.90 and 11,228.94 is: 15,496.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.76 : 28,510.90 = 11,228.94 : x
  2. Step 2: Convert to fraction form
    20,659.76/28,510.90 = 11,228.94/x
  3. Step 3: Cross multiply
    20,659.76x = 28,510.90 × 11,228.94
  4. Step 4: Simplify right side
    20,659.76x = 320,147,185.45
  5. Step 5: Solve for x
    x = 320,147,185.45/20,659.76
  6. Step 6: Final answer
    x = 15,496.17

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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.