Home / 21,539.12-32,302.40-8,388.36

Finding the Fourth Proportional to 21,539.12, 32,302.40 and 8,388.36

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Solution

The fourth proportional to 21,539.12, 32,302.40 and 8,388.36 is: 12,580.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,539.12 : 32,302.40 = 8,388.36 : x
  2. Step 2: Convert to fraction form
    21,539.12/32,302.40 = 8,388.36/x
  3. Step 3: Cross multiply
    21,539.12x = 32,302.40 × 8,388.36
  4. Step 4: Simplify right side
    21,539.12x = 270,964,118.12
  5. Step 5: Solve for x
    x = 270,964,118.12/21,539.12
  6. Step 6: Final answer
    x = 12,580.10

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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.