Home / 13,860.36-19,128.84-8,196.84

Finding the Fourth Proportional to 13,860.36, 19,128.84 and 8,196.84

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Solution

The fourth proportional to 13,860.36, 19,128.84 and 8,196.84 is: 11,312.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.36 : 19,128.84 = 8,196.84 : x
  2. Step 2: Convert to fraction form
    13,860.36/19,128.84 = 8,196.84/x
  3. Step 3: Cross multiply
    13,860.36x = 19,128.84 × 8,196.84
  4. Step 4: Simplify right side
    13,860.36x = 156,796,040.87
  5. Step 5: Solve for x
    x = 156,796,040.87/13,860.36
  6. Step 6: Final answer
    x = 11,312.55

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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.