Home / 21,099.12-29,119.68-12,714

Finding the Fourth Proportional to 21,099.12, 29,119.68 and 12,714

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Solution

The fourth proportional to 21,099.12, 29,119.68 and 12,714 is: 17,547.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.12 : 29,119.68 = 12,714 : x
  2. Step 2: Convert to fraction form
    21,099.12/29,119.68 = 12,714/x
  3. Step 3: Cross multiply
    21,099.12x = 29,119.68 × 12,714
  4. Step 4: Simplify right side
    21,099.12x = 370,227,611.52
  5. Step 5: Solve for x
    x = 370,227,611.52/21,099.12
  6. Step 6: Final answer
    x = 17,547.06

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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.