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Finding the Fourth Proportional to 21,992.41, 32,980.38 and 8,840.31

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Solution

The fourth proportional to 21,992.41, 32,980.38 and 8,840.31 is: 13,257.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,992.41 : 32,980.38 = 8,840.31 : x
  2. Step 2: Convert to fraction form
    21,992.41/32,980.38 = 8,840.31/x
  3. Step 3: Cross multiply
    21,992.41x = 32,980.38 × 8,840.31
  4. Step 4: Simplify right side
    21,992.41x = 291,556,783.12
  5. Step 5: Solve for x
    x = 291,556,783.12/21,992.41
  6. Step 6: Final answer
    x = 13,257.15

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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.