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Finding the Fourth Proportional to 38,877.53, 53,652.51 and 21,882.51

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Solution

The fourth proportional to 38,877.53, 53,652.51 and 21,882.51 is: 30,198.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,877.53 : 53,652.51 = 21,882.51 : x
  2. Step 2: Convert to fraction form
    38,877.53/53,652.51 = 21,882.51/x
  3. Step 3: Cross multiply
    38,877.53x = 53,652.51 × 21,882.51
  4. Step 4: Simplify right side
    38,877.53x = 1,174,051,586.60
  5. Step 5: Solve for x
    x = 1,174,051,586.60/38,877.53
  6. Step 6: Final answer
    x = 30,198.72

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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.