Home / 21,339.40-32,009.10-13,582.60

Finding the Fourth Proportional to 21,339.40, 32,009.10 and 13,582.60

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Solution

The fourth proportional to 21,339.40, 32,009.10 and 13,582.60 is: 20,373.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.40 : 32,009.10 = 13,582.60 : x
  2. Step 2: Convert to fraction form
    21,339.40/32,009.10 = 13,582.60/x
  3. Step 3: Cross multiply
    21,339.40x = 32,009.10 × 13,582.60
  4. Step 4: Simplify right side
    21,339.40x = 434,766,801.66
  5. Step 5: Solve for x
    x = 434,766,801.66/21,339.40
  6. Step 6: Final answer
    x = 20,373.90

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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.