Home / 21,791.10-32,643.45-12,999.90

Finding the Fourth Proportional to 21,791.10, 32,643.45 and 12,999.90

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Solution

The fourth proportional to 21,791.10, 32,643.45 and 12,999.90 is: 19,474.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,791.10 : 32,643.45 = 12,999.90 : x
  2. Step 2: Convert to fraction form
    21,791.10/32,643.45 = 12,999.90/x
  3. Step 3: Cross multiply
    21,791.10x = 32,643.45 × 12,999.90
  4. Step 4: Simplify right side
    21,791.10x = 424,361,585.66
  5. Step 5: Solve for x
    x = 424,361,585.66/21,791.10
  6. Step 6: Final answer
    x = 19,474.08

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1.5x scale

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.