Home / 21,862.63-32,790.45-7,820.04

Finding the Fourth Proportional to 21,862.63, 32,790.45 and 7,820.04

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Solution

The fourth proportional to 21,862.63, 32,790.45 and 7,820.04 is: 11,728.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,862.63 : 32,790.45 = 7,820.04 : x
  2. Step 2: Convert to fraction form
    21,862.63/32,790.45 = 7,820.04/x
  3. Step 3: Cross multiply
    21,862.63x = 32,790.45 × 7,820.04
  4. Step 4: Simplify right side
    21,862.63x = 256,422,630.62
  5. Step 5: Solve for x
    x = 256,422,630.62/21,862.63
  6. Step 6: Final answer
    x = 11,728.81

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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.