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Finding the Fourth Proportional to 14,669.68, 21,978.96 and 12,220.24

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Solution

The fourth proportional to 14,669.68, 21,978.96 and 12,220.24 is: 18,309.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,669.68 : 21,978.96 = 12,220.24 : x
  2. Step 2: Convert to fraction form
    14,669.68/21,978.96 = 12,220.24/x
  3. Step 3: Cross multiply
    14,669.68x = 21,978.96 × 12,220.24
  4. Step 4: Simplify right side
    14,669.68x = 268,588,166.15
  5. Step 5: Solve for x
    x = 268,588,166.15/14,669.68
  6. Step 6: Final answer
    x = 18,309.07

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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.