Home / 21,415.12-32,122.68-19,756.24

Finding the Fourth Proportional to 21,415.12, 32,122.68 and 19,756.24

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Solution

The fourth proportional to 21,415.12, 32,122.68 and 19,756.24 is: 29,634.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,415.12 : 32,122.68 = 19,756.24 : x
  2. Step 2: Convert to fraction form
    21,415.12/32,122.68 = 19,756.24/x
  3. Step 3: Cross multiply
    21,415.12x = 32,122.68 × 19,756.24
  4. Step 4: Simplify right side
    21,415.12x = 634,623,375.52
  5. Step 5: Solve for x
    x = 634,623,375.52/21,415.12
  6. Step 6: Final answer
    x = 29,634.36

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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.