Home / 13,396.78-18,448.56-12,541.02

Finding the Fourth Proportional to 13,396.78, 18,448.56 and 12,541.02

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Solution

The fourth proportional to 13,396.78, 18,448.56 and 12,541.02 is: 17,270.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,396.78 : 18,448.56 = 12,541.02 : x
  2. Step 2: Convert to fraction form
    13,396.78/18,448.56 = 12,541.02/x
  3. Step 3: Cross multiply
    13,396.78x = 18,448.56 × 12,541.02
  4. Step 4: Simplify right side
    13,396.78x = 231,363,759.93
  5. Step 5: Solve for x
    x = 231,363,759.93/13,396.78
  6. Step 6: Final answer
    x = 17,270.10

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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.