Home / 13,220.23-19,821.48-5,207.67

Finding the Fourth Proportional to 13,220.23, 19,821.48 and 5,207.67

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Solution

The fourth proportional to 13,220.23, 19,821.48 and 5,207.67 is: 7,808.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.23 : 19,821.48 = 5,207.67 : x
  2. Step 2: Convert to fraction form
    13,220.23/19,821.48 = 5,207.67/x
  3. Step 3: Cross multiply
    13,220.23x = 19,821.48 × 5,207.67
  4. Step 4: Simplify right side
    13,220.23x = 103,223,781.55
  5. Step 5: Solve for x
    x = 103,223,781.55/13,220.23
  6. Step 6: Final answer
    x = 7,808.02

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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.