Home / 13,205.09-19,806.65-4,881.21

Finding the Fourth Proportional to 13,205.09, 19,806.65 and 4,881.21

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Solution

The fourth proportional to 13,205.09, 19,806.65 and 4,881.21 is: 7,321.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,205.09 : 19,806.65 = 4,881.21 : x
  2. Step 2: Convert to fraction form
    13,205.09/19,806.65 = 4,881.21/x
  3. Step 3: Cross multiply
    13,205.09x = 19,806.65 × 4,881.21
  4. Step 4: Simplify right side
    13,205.09x = 96,680,393.64
  5. Step 5: Solve for x
    x = 96,680,393.64/13,205.09
  6. Step 6: Final answer
    x = 7,321.45

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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.