Home / 21,985.58-32,980.41-7,949.12

Finding the Fourth Proportional to 21,985.58, 32,980.41 and 7,949.12

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Solution

The fourth proportional to 21,985.58, 32,980.41 and 7,949.12 is: 11,924.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.58 : 32,980.41 = 7,949.12 : x
  2. Step 2: Convert to fraction form
    21,985.58/32,980.41 = 7,949.12/x
  3. Step 3: Cross multiply
    21,985.58x = 32,980.41 × 7,949.12
  4. Step 4: Simplify right side
    21,985.58x = 262,165,236.74
  5. Step 5: Solve for x
    x = 262,165,236.74/21,985.58
  6. Step 6: Final answer
    x = 11,924.42

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1.5x scale

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.