Home / 13,477.48-20,220.13-5,578.54

Finding the Fourth Proportional to 13,477.48, 20,220.13 and 5,578.54

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Solution

The fourth proportional to 13,477.48, 20,220.13 and 5,578.54 is: 8,369.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,477.48 : 20,220.13 = 5,578.54 : x
  2. Step 2: Convert to fraction form
    13,477.48/20,220.13 = 5,578.54/x
  3. Step 3: Cross multiply
    13,477.48x = 20,220.13 × 5,578.54
  4. Step 4: Simplify right side
    13,477.48x = 112,798,804.01
  5. Step 5: Solve for x
    x = 112,798,804.01/13,477.48
  6. Step 6: Final answer
    x = 8,369.43

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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.