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Finding the Fourth Proportional to 13,250.70, 19,871.13 and 3,888.33

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Solution

The fourth proportional to 13,250.70, 19,871.13 and 3,888.33 is: 5,831.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,250.70 : 19,871.13 = 3,888.33 : x
  2. Step 2: Convert to fraction form
    13,250.70/19,871.13 = 3,888.33/x
  3. Step 3: Cross multiply
    13,250.70x = 19,871.13 × 3,888.33
  4. Step 4: Simplify right side
    13,250.70x = 77,265,510.91
  5. Step 5: Solve for x
    x = 77,265,510.91/13,250.70
  6. Step 6: Final answer
    x = 5,831.05

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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.