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Finding the Fourth Proportional to 21,788.91, 32,683.37 and 6,999.03

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Solution

The fourth proportional to 21,788.91, 32,683.37 and 6,999.03 is: 10,498.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,788.91 : 32,683.37 = 6,999.03 : x
  2. Step 2: Convert to fraction form
    21,788.91/32,683.37 = 6,999.03/x
  3. Step 3: Cross multiply
    21,788.91x = 32,683.37 × 6,999.03
  4. Step 4: Simplify right side
    21,788.91x = 228,751,852.14
  5. Step 5: Solve for x
    x = 228,751,852.14/21,788.91
  6. Step 6: Final answer
    x = 10,498.55

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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.