Home / 13,583.28-20,355.12-7,727.52

Finding the Fourth Proportional to 13,583.28, 20,355.12 and 7,727.52

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Solution

The fourth proportional to 13,583.28, 20,355.12 and 7,727.52 is: 11,580.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,583.28 : 20,355.12 = 7,727.52 : x
  2. Step 2: Convert to fraction form
    13,583.28/20,355.12 = 7,727.52/x
  3. Step 3: Cross multiply
    13,583.28x = 20,355.12 × 7,727.52
  4. Step 4: Simplify right side
    13,583.28x = 157,294,596.90
  5. Step 5: Solve for x
    x = 157,294,596.90/13,583.28
  6. Step 6: Final answer
    x = 11,580.02

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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.