Home / 21,548.97-29,722.95-13,981.79

Finding the Fourth Proportional to 21,548.97, 29,722.95 and 13,981.79

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Solution

The fourth proportional to 21,548.97, 29,722.95 and 13,981.79 is: 19,285.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,548.97 : 29,722.95 = 13,981.79 : x
  2. Step 2: Convert to fraction form
    21,548.97/29,722.95 = 13,981.79/x
  3. Step 3: Cross multiply
    21,548.97x = 29,722.95 × 13,981.79
  4. Step 4: Simplify right side
    21,548.97x = 415,580,119.39
  5. Step 5: Solve for x
    x = 415,580,119.39/21,548.97
  6. Step 6: Final answer
    x = 19,285.38

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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.