Home / 21,290.02-29,380.26-12,339.24

Finding the Fourth Proportional to 21,290.02, 29,380.26 and 12,339.24

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Solution

The fourth proportional to 21,290.02, 29,380.26 and 12,339.24 is: 17,028.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,290.02 : 29,380.26 = 12,339.24 : x
  2. Step 2: Convert to fraction form
    21,290.02/29,380.26 = 12,339.24/x
  3. Step 3: Cross multiply
    21,290.02x = 29,380.26 × 12,339.24
  4. Step 4: Simplify right side
    21,290.02x = 362,530,079.40
  5. Step 5: Solve for x
    x = 362,530,079.40/21,290.02
  6. Step 6: Final answer
    x = 17,028.17

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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.