Home / 13,940.36-19,231.28-8,902.06

Finding the Fourth Proportional to 13,940.36, 19,231.28 and 8,902.06

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Solution

The fourth proportional to 13,940.36, 19,231.28 and 8,902.06 is: 12,280.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.36 : 19,231.28 = 8,902.06 : x
  2. Step 2: Convert to fraction form
    13,940.36/19,231.28 = 8,902.06/x
  3. Step 3: Cross multiply
    13,940.36x = 19,231.28 × 8,902.06
  4. Step 4: Simplify right side
    13,940.36x = 171,197,949.23
  5. Step 5: Solve for x
    x = 171,197,949.23/13,940.36
  6. Step 6: Final answer
    x = 12,280.74

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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.