Home / 11,617.87-17,420.86-4,220.59

Finding the Fourth Proportional to 11,617.87, 17,420.86 and 4,220.59

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Solution

The fourth proportional to 11,617.87, 17,420.86 and 4,220.59 is: 6,328.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,617.87 : 17,420.86 = 4,220.59 : x
  2. Step 2: Convert to fraction form
    11,617.87/17,420.86 = 4,220.59/x
  3. Step 3: Cross multiply
    11,617.87x = 17,420.86 × 4,220.59
  4. Step 4: Simplify right side
    11,617.87x = 73,526,307.51
  5. Step 5: Solve for x
    x = 73,526,307.51/11,617.87
  6. Step 6: Final answer
    x = 6,328.73

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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.