Home / 20,274.18-27,976.77-11,320.98

Finding the Fourth Proportional to 20,274.18, 27,976.77 and 11,320.98

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Solution

The fourth proportional to 20,274.18, 27,976.77 and 11,320.98 is: 15,622.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,274.18 : 27,976.77 = 11,320.98 : x
  2. Step 2: Convert to fraction form
    20,274.18/27,976.77 = 11,320.98/x
  3. Step 3: Cross multiply
    20,274.18x = 27,976.77 × 11,320.98
  4. Step 4: Simplify right side
    20,274.18x = 316,724,453.63
  5. Step 5: Solve for x
    x = 316,724,453.63/20,274.18
  6. Step 6: Final answer
    x = 15,622.06

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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.