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Finding the Fourth Proportional to 13,749.71, 20,647.10 and 13,048.52

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Solution

The fourth proportional to 13,749.71, 20,647.10 and 13,048.52 is: 19,594.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.71 : 20,647.10 = 13,048.52 : x
  2. Step 2: Convert to fraction form
    13,749.71/20,647.10 = 13,048.52/x
  3. Step 3: Cross multiply
    13,749.71x = 20,647.10 × 13,048.52
  4. Step 4: Simplify right side
    13,749.71x = 269,414,026.68
  5. Step 5: Solve for x
    x = 269,414,026.68/13,749.71
  6. Step 6: Final answer
    x = 19,594.17

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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.