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Finding the Fourth Proportional to 32,308.80, 44,590.80 and 21,012

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Solution

The fourth proportional to 32,308.80, 44,590.80 and 21,012 is: 28,999.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,308.80 : 44,590.80 = 21,012 : x
  2. Step 2: Convert to fraction form
    32,308.80/44,590.80 = 21,012/x
  3. Step 3: Cross multiply
    32,308.80x = 44,590.80 × 21,012
  4. Step 4: Simplify right side
    32,308.80x = 936,941,889.60
  5. Step 5: Solve for x
    x = 936,941,889.60/32,308.80
  6. Step 6: Final answer
    x = 28,999.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.