Home / 21,620.36-32,443.04-9,139.58

Finding the Fourth Proportional to 21,620.36, 32,443.04 and 9,139.58

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Solution

The fourth proportional to 21,620.36, 32,443.04 and 9,139.58 is: 13,714.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,620.36 : 32,443.04 = 9,139.58 : x
  2. Step 2: Convert to fraction form
    21,620.36/32,443.04 = 9,139.58/x
  3. Step 3: Cross multiply
    21,620.36x = 32,443.04 × 9,139.58
  4. Step 4: Simplify right side
    21,620.36x = 296,515,759.52
  5. Step 5: Solve for x
    x = 296,515,759.52/21,620.36
  6. Step 6: Final answer
    x = 13,714.65

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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.