Home / 21,891.48-30,211.77-12,460.04

Finding the Fourth Proportional to 21,891.48, 30,211.77 and 12,460.04

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Solution

The fourth proportional to 21,891.48, 30,211.77 and 12,460.04 is: 17,195.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,891.48 : 30,211.77 = 12,460.04 : x
  2. Step 2: Convert to fraction form
    21,891.48/30,211.77 = 12,460.04/x
  3. Step 3: Cross multiply
    21,891.48x = 30,211.77 × 12,460.04
  4. Step 4: Simplify right side
    21,891.48x = 376,439,871.63
  5. Step 5: Solve for x
    x = 376,439,871.63/21,891.48
  6. Step 6: Final answer
    x = 17,195.73

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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.