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Finding the Fourth Proportional to 21,999.65, 32,980.92 and 14,959.94

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Solution

The fourth proportional to 21,999.65, 32,980.92 and 14,959.94 is: 22,427.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,999.65 : 32,980.92 = 14,959.94 : x
  2. Step 2: Convert to fraction form
    21,999.65/32,980.92 = 14,959.94/x
  3. Step 3: Cross multiply
    21,999.65x = 32,980.92 × 14,959.94
  4. Step 4: Simplify right side
    21,999.65x = 493,392,584.34
  5. Step 5: Solve for x
    x = 493,392,584.34/21,999.65
  6. Step 6: Final answer
    x = 22,427.29

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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.