Home / 13,477.78-20,215.99-5,157.16

Finding the Fourth Proportional to 13,477.78, 20,215.99 and 5,157.16

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Solution

The fourth proportional to 13,477.78, 20,215.99 and 5,157.16 is: 7,735.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,477.78 : 20,215.99 = 5,157.16 : x
  2. Step 2: Convert to fraction form
    13,477.78/20,215.99 = 5,157.16/x
  3. Step 3: Cross multiply
    13,477.78x = 20,215.99 × 5,157.16
  4. Step 4: Simplify right side
    13,477.78x = 104,256,968.12
  5. Step 5: Solve for x
    x = 104,256,968.12/13,477.78
  6. Step 6: Final answer
    x = 7,735.47

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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.