Home / 14,665.47-21,998.19-12,685.21

Finding the Fourth Proportional to 14,665.47, 21,998.19 and 12,685.21

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Solution

The fourth proportional to 14,665.47, 21,998.19 and 12,685.21 is: 19,027.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,665.47 : 21,998.19 = 12,685.21 : x
  2. Step 2: Convert to fraction form
    14,665.47/21,998.19 = 12,685.21/x
  3. Step 3: Cross multiply
    14,665.47x = 21,998.19 × 12,685.21
  4. Step 4: Simplify right side
    14,665.47x = 279,051,693.59
  5. Step 5: Solve for x
    x = 279,051,693.59/14,665.47
  6. Step 6: Final answer
    x = 19,027.81

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Similar ratio
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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.