Home / 21,211.89-29,272.77-11,652.18

Finding the Fourth Proportional to 21,211.89, 29,272.77 and 11,652.18

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Solution

The fourth proportional to 21,211.89, 29,272.77 and 11,652.18 is: 16,080.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.89 : 29,272.77 = 11,652.18 : x
  2. Step 2: Convert to fraction form
    21,211.89/29,272.77 = 11,652.18/x
  3. Step 3: Cross multiply
    21,211.89x = 29,272.77 × 11,652.18
  4. Step 4: Simplify right side
    21,211.89x = 341,091,585.14
  5. Step 5: Solve for x
    x = 341,091,585.14/21,211.89
  6. Step 6: Final answer
    x = 16,080.21

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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.