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Finding the Fourth Proportional to 21,998.46, 30,349.89 and 14,448.87

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Solution

The fourth proportional to 21,998.46, 30,349.89 and 14,448.87 is: 19,934.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998.46 : 30,349.89 = 14,448.87 : x
  2. Step 2: Convert to fraction form
    21,998.46/30,349.89 = 14,448.87/x
  3. Step 3: Cross multiply
    21,998.46x = 30,349.89 × 14,448.87
  4. Step 4: Simplify right side
    21,998.46x = 438,521,615.12
  5. Step 5: Solve for x
    x = 438,521,615.12/21,998.46
  6. Step 6: Final answer
    x = 19,934.20

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1.5x scale

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.