Home / 21,122.26-31,655.40-11,240.26

Finding the Fourth Proportional to 21,122.26, 31,655.40 and 11,240.26

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Solution

The fourth proportional to 21,122.26, 31,655.40 and 11,240.26 is: 16,845.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,122.26 : 31,655.40 = 11,240.26 : x
  2. Step 2: Convert to fraction form
    21,122.26/31,655.40 = 11,240.26/x
  3. Step 3: Cross multiply
    21,122.26x = 31,655.40 × 11,240.26
  4. Step 4: Simplify right side
    21,122.26x = 355,814,926.40
  5. Step 5: Solve for x
    x = 355,814,926.40/21,122.26
  6. Step 6: Final answer
    x = 16,845.50

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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.