Home / 13,410.79-20,126.81-7,090.16

Finding the Fourth Proportional to 13,410.79, 20,126.81 and 7,090.16

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Solution

The fourth proportional to 13,410.79, 20,126.81 and 7,090.16 is: 10,640.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,410.79 : 20,126.81 = 7,090.16 : x
  2. Step 2: Convert to fraction form
    13,410.79/20,126.81 = 7,090.16/x
  3. Step 3: Cross multiply
    13,410.79x = 20,126.81 × 7,090.16
  4. Step 4: Simplify right side
    13,410.79x = 142,702,220.28
  5. Step 5: Solve for x
    x = 142,702,220.28/13,410.79
  6. Step 6: Final answer
    x = 10,640.85

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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.