Home / 13,902.03-20,849.40-5,139.45

Finding the Fourth Proportional to 13,902.03, 20,849.40 and 5,139.45

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Solution

The fourth proportional to 13,902.03, 20,849.40 and 5,139.45 is: 7,707.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,902.03 : 20,849.40 = 5,139.45 : x
  2. Step 2: Convert to fraction form
    13,902.03/20,849.40 = 5,139.45/x
  3. Step 3: Cross multiply
    13,902.03x = 20,849.40 × 5,139.45
  4. Step 4: Simplify right side
    13,902.03x = 107,154,448.83
  5. Step 5: Solve for x
    x = 107,154,448.83/13,902.03
  6. Step 6: Final answer
    x = 7,707.83

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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.