Home / 20,961.84-28,924.71-14,170.64

Finding the Fourth Proportional to 20,961.84, 28,924.71 and 14,170.64

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Solution

The fourth proportional to 20,961.84, 28,924.71 and 14,170.64 is: 19,553.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.84 : 28,924.71 = 14,170.64 : x
  2. Step 2: Convert to fraction form
    20,961.84/28,924.71 = 14,170.64/x
  3. Step 3: Cross multiply
    20,961.84x = 28,924.71 × 14,170.64
  4. Step 4: Simplify right side
    20,961.84x = 409,881,669.50
  5. Step 5: Solve for x
    x = 409,881,669.50/20,961.84
  6. Step 6: Final answer
    x = 19,553.71

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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.