Home / 13,557.80-20,336.81-5,240.52

Finding the Fourth Proportional to 13,557.80, 20,336.81 and 5,240.52

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Solution

The fourth proportional to 13,557.80, 20,336.81 and 5,240.52 is: 7,860.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,557.80 : 20,336.81 = 5,240.52 : x
  2. Step 2: Convert to fraction form
    13,557.80/20,336.81 = 5,240.52/x
  3. Step 3: Cross multiply
    13,557.80x = 20,336.81 × 5,240.52
  4. Step 4: Simplify right side
    13,557.80x = 106,575,433.34
  5. Step 5: Solve for x
    x = 106,575,433.34/13,557.80
  6. Step 6: Final answer
    x = 7,860.82

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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.