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Finding the Fourth Proportional to 38,896.68, 53,682.54 and 21,904.25

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Solution

The fourth proportional to 38,896.68, 53,682.54 and 21,904.25 is: 30,230.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,896.68 : 53,682.54 = 21,904.25 : x
  2. Step 2: Convert to fraction form
    38,896.68/53,682.54 = 21,904.25/x
  3. Step 3: Cross multiply
    38,896.68x = 53,682.54 × 21,904.25
  4. Step 4: Simplify right side
    38,896.68x = 1,175,875,426.24
  5. Step 5: Solve for x
    x = 1,175,875,426.24/38,896.68
  6. Step 6: Final answer
    x = 30,230.74

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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.