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Finding the Fourth Proportional to 15,800.49, 21,801.83 and 10,208.25

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Solution

The fourth proportional to 15,800.49, 21,801.83 and 10,208.25 is: 14,085.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,800.49 : 21,801.83 = 10,208.25 : x
  2. Step 2: Convert to fraction form
    15,800.49/21,801.83 = 10,208.25/x
  3. Step 3: Cross multiply
    15,800.49x = 21,801.83 × 10,208.25
  4. Step 4: Simplify right side
    15,800.49x = 222,558,480.06
  5. Step 5: Solve for x
    x = 222,558,480.06/15,800.49
  6. Step 6: Final answer
    x = 14,085.54

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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.