Home / 13,570.39-20,356.80-3,709.72

Finding the Fourth Proportional to 13,570.39, 20,356.80 and 3,709.72

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Solution

The fourth proportional to 13,570.39, 20,356.80 and 3,709.72 is: 5,564.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,570.39 : 20,356.80 = 3,709.72 : x
  2. Step 2: Convert to fraction form
    13,570.39/20,356.80 = 3,709.72/x
  3. Step 3: Cross multiply
    13,570.39x = 20,356.80 × 3,709.72
  4. Step 4: Simplify right side
    13,570.39x = 75,518,028.10
  5. Step 5: Solve for x
    x = 75,518,028.10/13,570.39
  6. Step 6: Final answer
    x = 5,564.91

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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.