Home / 13,361.86-18,439.75-7,394.09

Finding the Fourth Proportional to 13,361.86, 18,439.75 and 7,394.09

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Solution

The fourth proportional to 13,361.86, 18,439.75 and 7,394.09 is: 10,204.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,361.86 : 18,439.75 = 7,394.09 : x
  2. Step 2: Convert to fraction form
    13,361.86/18,439.75 = 7,394.09/x
  3. Step 3: Cross multiply
    13,361.86x = 18,439.75 × 7,394.09
  4. Step 4: Simplify right side
    13,361.86x = 136,345,088.12
  5. Step 5: Solve for x
    x = 136,345,088.12/13,361.86
  6. Step 6: Final answer
    x = 10,204.05

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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.