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Finding the Fourth Proportional to 34,749.56, 47,953.62 and 19,640.21

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Solution

The fourth proportional to 34,749.56, 47,953.62 and 19,640.21 is: 27,103.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,749.56 : 47,953.62 = 19,640.21 : x
  2. Step 2: Convert to fraction form
    34,749.56/47,953.62 = 19,640.21/x
  3. Step 3: Cross multiply
    34,749.56x = 47,953.62 × 19,640.21
  4. Step 4: Simplify right side
    34,749.56x = 941,819,167.06
  5. Step 5: Solve for x
    x = 941,819,167.06/34,749.56
  6. Step 6: Final answer
    x = 27,103.05

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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.