Home / 21,781.94-30,059.08-12,350.51

Finding the Fourth Proportional to 21,781.94, 30,059.08 and 12,350.51

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Solution

The fourth proportional to 21,781.94, 30,059.08 and 12,350.51 is: 17,043.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,781.94 : 30,059.08 = 12,350.51 : x
  2. Step 2: Convert to fraction form
    21,781.94/30,059.08 = 12,350.51/x
  3. Step 3: Cross multiply
    21,781.94x = 30,059.08 × 12,350.51
  4. Step 4: Simplify right side
    21,781.94x = 371,244,817.84
  5. Step 5: Solve for x
    x = 371,244,817.84/21,781.94
  6. Step 6: Final answer
    x = 17,043.70

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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.