Home / 21,643.04-29,874.84-12,693.44

Finding the Fourth Proportional to 21,643.04, 29,874.84 and 12,693.44

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Solution

The fourth proportional to 21,643.04, 29,874.84 and 12,693.44 is: 17,521.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,643.04 : 29,874.84 = 12,693.44 : x
  2. Step 2: Convert to fraction form
    21,643.04/29,874.84 = 12,693.44/x
  3. Step 3: Cross multiply
    21,643.04x = 29,874.84 × 12,693.44
  4. Step 4: Simplify right side
    21,643.04x = 379,214,489.05
  5. Step 5: Solve for x
    x = 379,214,489.05/21,643.04
  6. Step 6: Final answer
    x = 17,521.31

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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.