Home / 21,486.40-32,215.20-9,793.60

Finding the Fourth Proportional to 21,486.40, 32,215.20 and 9,793.60

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Solution

The fourth proportional to 21,486.40, 32,215.20 and 9,793.60 is: 14,683.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,486.40 : 32,215.20 = 9,793.60 : x
  2. Step 2: Convert to fraction form
    21,486.40/32,215.20 = 9,793.60/x
  3. Step 3: Cross multiply
    21,486.40x = 32,215.20 × 9,793.60
  4. Step 4: Simplify right side
    21,486.40x = 315,502,782.72
  5. Step 5: Solve for x
    x = 315,502,782.72/21,486.40
  6. Step 6: Final answer
    x = 14,683.84

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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.