Home / 13,203.90-19,806.15-5,307.21

Finding the Fourth Proportional to 13,203.90, 19,806.15 and 5,307.21

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Solution

The fourth proportional to 13,203.90, 19,806.15 and 5,307.21 is: 7,960.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,203.90 : 19,806.15 = 5,307.21 : x
  2. Step 2: Convert to fraction form
    13,203.90/19,806.15 = 5,307.21/x
  3. Step 3: Cross multiply
    13,203.90x = 19,806.15 × 5,307.21
  4. Step 4: Simplify right side
    13,203.90x = 105,115,397.34
  5. Step 5: Solve for x
    x = 105,115,397.34/13,203.90
  6. Step 6: Final answer
    x = 7,960.94

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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.