Home / 21,828.04-30,126.32-12,877.75

Finding the Fourth Proportional to 21,828.04, 30,126.32 and 12,877.75

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Solution

The fourth proportional to 21,828.04, 30,126.32 and 12,877.75 is: 17,773.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,828.04 : 30,126.32 = 12,877.75 : x
  2. Step 2: Convert to fraction form
    21,828.04/30,126.32 = 12,877.75/x
  3. Step 3: Cross multiply
    21,828.04x = 30,126.32 × 12,877.75
  4. Step 4: Simplify right side
    21,828.04x = 387,959,098.94
  5. Step 5: Solve for x
    x = 387,959,098.94/21,828.04
  6. Step 6: Final answer
    x = 17,773.43

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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.