Home / 21,987.39-32,982-6,405.01

Finding the Fourth Proportional to 21,987.39, 32,982 and 6,405.01

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Solution

The fourth proportional to 21,987.39, 32,982 and 6,405.01 is: 9,607.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,987.39 : 32,982 = 6,405.01 : x
  2. Step 2: Convert to fraction form
    21,987.39/32,982 = 6,405.01/x
  3. Step 3: Cross multiply
    21,987.39x = 32,982 × 6,405.01
  4. Step 4: Simplify right side
    21,987.39x = 211,250,039.82
  5. Step 5: Solve for x
    x = 211,250,039.82/21,987.39
  6. Step 6: Final answer
    x = 9,607.78

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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.