Home / 20,411.97-28,168.50-11,459.49

Finding the Fourth Proportional to 20,411.97, 28,168.50 and 11,459.49

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Solution

The fourth proportional to 20,411.97, 28,168.50 and 11,459.49 is: 15,814.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,411.97 : 28,168.50 = 11,459.49 : x
  2. Step 2: Convert to fraction form
    20,411.97/28,168.50 = 11,459.49/x
  3. Step 3: Cross multiply
    20,411.97x = 28,168.50 × 11,459.49
  4. Step 4: Simplify right side
    20,411.97x = 322,796,644.07
  5. Step 5: Solve for x
    x = 322,796,644.07/20,411.97
  6. Step 6: Final answer
    x = 15,814.09

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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.