Home / 21,274.20-31,859.82-18,136.26

Finding the Fourth Proportional to 21,274.20, 31,859.82 and 18,136.26

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Solution

The fourth proportional to 21,274.20, 31,859.82 and 18,136.26 is: 27,160.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,274.20 : 31,859.82 = 18,136.26 : x
  2. Step 2: Convert to fraction form
    21,274.20/31,859.82 = 18,136.26/x
  3. Step 3: Cross multiply
    21,274.20x = 31,859.82 × 18,136.26
  4. Step 4: Simplify right side
    21,274.20x = 577,817,979.07
  5. Step 5: Solve for x
    x = 577,817,979.07/21,274.20
  6. Step 6: Final answer
    x = 27,160.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.