Home / 20,983.32-28,955.94-11,551.68

Finding the Fourth Proportional to 20,983.32, 28,955.94 and 11,551.68

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Solution

The fourth proportional to 20,983.32, 28,955.94 and 11,551.68 is: 15,940.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.32 : 28,955.94 = 11,551.68 : x
  2. Step 2: Convert to fraction form
    20,983.32/28,955.94 = 11,551.68/x
  3. Step 3: Cross multiply
    20,983.32x = 28,955.94 × 11,551.68
  4. Step 4: Simplify right side
    20,983.32x = 334,489,752.98
  5. Step 5: Solve for x
    x = 334,489,752.98/20,983.32
  6. Step 6: Final answer
    x = 15,940.74

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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.