Home / 21,985.20-32,982.48-6,401.52

Finding the Fourth Proportional to 21,985.20, 32,982.48 and 6,401.52

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Solution

The fourth proportional to 21,985.20, 32,982.48 and 6,401.52 is: 9,603.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.20 : 32,982.48 = 6,401.52 : x
  2. Step 2: Convert to fraction form
    21,985.20/32,982.48 = 6,401.52/x
  3. Step 3: Cross multiply
    21,985.20x = 32,982.48 × 6,401.52
  4. Step 4: Simplify right side
    21,985.20x = 211,138,005.37
  5. Step 5: Solve for x
    x = 211,138,005.37/21,985.20
  6. Step 6: Final answer
    x = 9,603.64

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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.