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Finding the Fourth Proportional to 38,644.88, 53,333.32 and 21,648.88

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Solution

The fourth proportional to 38,644.88, 53,333.32 and 21,648.88 is: 29,877.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,644.88 : 53,333.32 = 21,648.88 : x
  2. Step 2: Convert to fraction form
    38,644.88/53,333.32 = 21,648.88/x
  3. Step 3: Cross multiply
    38,644.88x = 53,333.32 × 21,648.88
  4. Step 4: Simplify right side
    38,644.88x = 1,154,606,644.68
  5. Step 5: Solve for x
    x = 1,154,606,644.68/38,644.88
  6. Step 6: Final answer
    x = 29,877.35

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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.