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Finding the Fourth Proportional to 21,980.00, 32,971.50 and 8,832.35

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Solution

The fourth proportional to 21,980.00, 32,971.50 and 8,832.35 is: 13,249.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,980.00 : 32,971.50 = 8,832.35 : x
  2. Step 2: Convert to fraction form
    21,980.00/32,971.50 = 8,832.35/x
  3. Step 3: Cross multiply
    21,980.00x = 32,971.50 × 8,832.35
  4. Step 4: Simplify right side
    21,980.00x = 291,215,663.17
  5. Step 5: Solve for x
    x = 291,215,663.17/21,980.00
  6. Step 6: Final answer
    x = 13,249.12

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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.