Home / 13,859.09-19,126.24-8,479.84

Finding the Fourth Proportional to 13,859.09, 19,126.24 and 8,479.84

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Solution

The fourth proportional to 13,859.09, 19,126.24 and 8,479.84 is: 11,702.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,859.09 : 19,126.24 = 8,479.84 : x
  2. Step 2: Convert to fraction form
    13,859.09/19,126.24 = 8,479.84/x
  3. Step 3: Cross multiply
    13,859.09x = 19,126.24 × 8,479.84
  4. Step 4: Simplify right side
    13,859.09x = 162,187,412.60
  5. Step 5: Solve for x
    x = 162,187,412.60/13,859.09
  6. Step 6: Final answer
    x = 11,702.60

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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.