Home / 20,276.35-27,981.07-11,323.98

Finding the Fourth Proportional to 20,276.35, 27,981.07 and 11,323.98

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Solution

The fourth proportional to 20,276.35, 27,981.07 and 11,323.98 is: 15,626.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,276.35 : 27,981.07 = 11,323.98 : x
  2. Step 2: Convert to fraction form
    20,276.35/27,981.07 = 11,323.98/x
  3. Step 3: Cross multiply
    20,276.35x = 27,981.07 × 11,323.98
  4. Step 4: Simplify right side
    20,276.35x = 316,856,943.82
  5. Step 5: Solve for x
    x = 316,856,943.82/20,276.35
  6. Step 6: Final answer
    x = 15,626.92

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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.