Home / 13,220.32-19,827.40-3,858.37

Finding the Fourth Proportional to 13,220.32, 19,827.40 and 3,858.37

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Solution

The fourth proportional to 13,220.32, 19,827.40 and 3,858.37 is: 5,786.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.32 : 19,827.40 = 3,858.37 : x
  2. Step 2: Convert to fraction form
    13,220.32/19,827.40 = 3,858.37/x
  3. Step 3: Cross multiply
    13,220.32x = 19,827.40 × 3,858.37
  4. Step 4: Simplify right side
    13,220.32x = 76,501,445.34
  5. Step 5: Solve for x
    x = 76,501,445.34/13,220.32
  6. Step 6: Final answer
    x = 5,786.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.