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Finding the Fourth Proportional to 38,771.56, 58,108.56 and 21,001.54

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Solution

The fourth proportional to 38,771.56, 58,108.56 and 21,001.54 is: 31,475.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,771.56 : 58,108.56 = 21,001.54 : x
  2. Step 2: Convert to fraction form
    38,771.56/58,108.56 = 21,001.54/x
  3. Step 3: Cross multiply
    38,771.56x = 58,108.56 × 21,001.54
  4. Step 4: Simplify right side
    38,771.56x = 1,220,369,247.18
  5. Step 5: Solve for x
    x = 1,220,369,247.18/38,771.56
  6. Step 6: Final answer
    x = 31,475.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.