Home / 20,211.36-30,351.12-13,203.36

Finding the Fourth Proportional to 20,211.36, 30,351.12 and 13,203.36

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Solution

The fourth proportional to 20,211.36, 30,351.12 and 13,203.36 is: 19,827.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.36 : 30,351.12 = 13,203.36 : x
  2. Step 2: Convert to fraction form
    20,211.36/30,351.12 = 13,203.36/x
  3. Step 3: Cross multiply
    20,211.36x = 30,351.12 × 13,203.36
  4. Step 4: Simplify right side
    20,211.36x = 400,736,763.76
  5. Step 5: Solve for x
    x = 400,736,763.76/20,211.36
  6. Step 6: Final answer
    x = 19,827.30

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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.