Home / 11,142.84-15,376.41-6,426.78

Finding the Fourth Proportional to 11,142.84, 15,376.41 and 6,426.78

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Solution

The fourth proportional to 11,142.84, 15,376.41 and 6,426.78 is: 8,868.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,142.84 : 15,376.41 = 6,426.78 : x
  2. Step 2: Convert to fraction form
    11,142.84/15,376.41 = 6,426.78/x
  3. Step 3: Cross multiply
    11,142.84x = 15,376.41 × 6,426.78
  4. Step 4: Simplify right side
    11,142.84x = 98,820,804.26
  5. Step 5: Solve for x
    x = 98,820,804.26/11,142.84
  6. Step 6: Final answer
    x = 8,868.55

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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.