Home / 18,240.78-25,172.26-9,857.28

Finding the Fourth Proportional to 18,240.78, 25,172.26 and 9,857.28

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Solution

The fourth proportional to 18,240.78, 25,172.26 and 9,857.28 is: 13,603.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,240.78 : 25,172.26 = 9,857.28 : x
  2. Step 2: Convert to fraction form
    18,240.78/25,172.26 = 9,857.28/x
  3. Step 3: Cross multiply
    18,240.78x = 25,172.26 × 9,857.28
  4. Step 4: Simplify right side
    18,240.78x = 248,130,015.05
  5. Step 5: Solve for x
    x = 248,130,015.05/18,240.78
  6. Step 6: Final answer
    x = 13,603.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.