Home / 21,334.02-31,987.30-8,862.64

Finding the Fourth Proportional to 21,334.02, 31,987.30 and 8,862.64

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Solution

The fourth proportional to 21,334.02, 31,987.30 and 8,862.64 is: 13,288.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,334.02 : 31,987.30 = 8,862.64 : x
  2. Step 2: Convert to fraction form
    21,334.02/31,987.30 = 8,862.64/x
  3. Step 3: Cross multiply
    21,334.02x = 31,987.30 × 8,862.64
  4. Step 4: Simplify right side
    21,334.02x = 283,491,924.47
  5. Step 5: Solve for x
    x = 283,491,924.47/21,334.02
  6. Step 6: Final answer
    x = 13,288.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.