Home / 36,221.04-49,985.28-21,122.64

Finding the Fourth Proportional to 36,221.04, 49,985.28 and 21,122.64

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Solution

The fourth proportional to 36,221.04, 49,985.28 and 21,122.64 is: 29,149.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,221.04 : 49,985.28 = 21,122.64 : x
  2. Step 2: Convert to fraction form
    36,221.04/49,985.28 = 21,122.64/x
  3. Step 3: Cross multiply
    36,221.04x = 49,985.28 × 21,122.64
  4. Step 4: Simplify right side
    36,221.04x = 1,055,821,074.74
  5. Step 5: Solve for x
    x = 1,055,821,074.74/36,221.04
  6. Step 6: Final answer
    x = 29,149.39

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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.