Home / 13,886.24-19,163.28-8,218.90

Finding the Fourth Proportional to 13,886.24, 19,163.28 and 8,218.90

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Solution

The fourth proportional to 13,886.24, 19,163.28 and 8,218.90 is: 11,342.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,886.24 : 19,163.28 = 8,218.90 : x
  2. Step 2: Convert to fraction form
    13,886.24/19,163.28 = 8,218.90/x
  3. Step 3: Cross multiply
    13,886.24x = 19,163.28 × 8,218.90
  4. Step 4: Simplify right side
    13,886.24x = 157,501,136.77
  5. Step 5: Solve for x
    x = 157,501,136.77/13,886.24
  6. Step 6: Final answer
    x = 11,342.25

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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.