Home / 11,428.07-15,772.19-6,392.57

Finding the Fourth Proportional to 11,428.07, 15,772.19 and 6,392.57

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Solution

The fourth proportional to 11,428.07, 15,772.19 and 6,392.57 is: 8,822.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,428.07 : 15,772.19 = 6,392.57 : x
  2. Step 2: Convert to fraction form
    11,428.07/15,772.19 = 6,392.57/x
  3. Step 3: Cross multiply
    11,428.07x = 15,772.19 × 6,392.57
  4. Step 4: Simplify right side
    11,428.07x = 100,824,717.80
  5. Step 5: Solve for x
    x = 100,824,717.80/11,428.07
  6. Step 6: Final answer
    x = 8,822.55

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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.