Home / 11,178.36-15,426.86-7,394.99

Finding the Fourth Proportional to 11,178.36, 15,426.86 and 7,394.99

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Solution

The fourth proportional to 11,178.36, 15,426.86 and 7,394.99 is: 10,205.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,178.36 : 15,426.86 = 7,394.99 : x
  2. Step 2: Convert to fraction form
    11,178.36/15,426.86 = 7,394.99/x
  3. Step 3: Cross multiply
    11,178.36x = 15,426.86 × 7,394.99
  4. Step 4: Simplify right side
    11,178.36x = 114,081,361.32
  5. Step 5: Solve for x
    x = 114,081,361.32/11,178.36
  6. Step 6: Final answer
    x = 10,205.55

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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.