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Finding the Fourth Proportional to 29,999.82, 45,007.91 and 13,129.76

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Solution

The fourth proportional to 29,999.82, 45,007.91 and 13,129.76 is: 19,698.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,999.82 : 45,007.91 = 13,129.76 : x
  2. Step 2: Convert to fraction form
    29,999.82/45,007.91 = 13,129.76/x
  3. Step 3: Cross multiply
    29,999.82x = 45,007.91 × 13,129.76
  4. Step 4: Simplify right side
    29,999.82x = 590,942,831.36
  5. Step 5: Solve for x
    x = 590,942,831.36/29,999.82
  6. Step 6: Final answer
    x = 19,698.22

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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.