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Finding the Fourth Proportional to 21,953.57, 32,929.93 and 8,808.89

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Solution

The fourth proportional to 21,953.57, 32,929.93 and 8,808.89 is: 13,213.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,953.57 : 32,929.93 = 8,808.89 : x
  2. Step 2: Convert to fraction form
    21,953.57/32,929.93 = 8,808.89/x
  3. Step 3: Cross multiply
    21,953.57x = 32,929.93 × 8,808.89
  4. Step 4: Simplify right side
    21,953.57x = 290,076,131.08
  5. Step 5: Solve for x
    x = 290,076,131.08/21,953.57
  6. Step 6: Final answer
    x = 13,213.16

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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.