Home / 21,182.74-29,235.99-12,229

Finding the Fourth Proportional to 21,182.74, 29,235.99 and 12,229

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Solution

The fourth proportional to 21,182.74, 29,235.99 and 12,229 is: 16,878.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,182.74 : 29,235.99 = 12,229 : x
  2. Step 2: Convert to fraction form
    21,182.74/29,235.99 = 12,229/x
  3. Step 3: Cross multiply
    21,182.74x = 29,235.99 × 12,229
  4. Step 4: Simplify right side
    21,182.74x = 357,526,921.71
  5. Step 5: Solve for x
    x = 357,526,921.71/21,182.74
  6. Step 6: Final answer
    x = 16,878.22

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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.