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Finding the Fourth Proportional to 38,644.59, 53,329.54 and 21,877.59

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Solution

The fourth proportional to 38,644.59, 53,329.54 and 21,877.59 is: 30,191.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,644.59 : 53,329.54 = 21,877.59 : x
  2. Step 2: Convert to fraction form
    38,644.59/53,329.54 = 21,877.59/x
  3. Step 3: Cross multiply
    38,644.59x = 53,329.54 × 21,877.59
  4. Step 4: Simplify right side
    38,644.59x = 1,166,721,997.32
  5. Step 5: Solve for x
    x = 1,166,721,997.32/38,644.59
  6. Step 6: Final answer
    x = 30,191.08

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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.