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Finding the Fourth Proportional to 38,604.40, 53,273.56 and 21,837.40

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Solution

The fourth proportional to 38,604.40, 53,273.56 and 21,837.40 is: 30,135.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,604.40 : 53,273.56 = 21,837.40 : x
  2. Step 2: Convert to fraction form
    38,604.40/53,273.56 = 21,837.40/x
  3. Step 3: Cross multiply
    38,604.40x = 53,273.56 × 21,837.40
  4. Step 4: Simplify right side
    38,604.40x = 1,163,355,718.18
  5. Step 5: Solve for x
    x = 1,163,355,718.18/38,604.40
  6. Step 6: Final answer
    x = 30,135.32

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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.