Home / 13,911.33-20,852.42-5,140.65

Finding the Fourth Proportional to 13,911.33, 20,852.42 and 5,140.65

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Solution

The fourth proportional to 13,911.33, 20,852.42 and 5,140.65 is: 7,705.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,911.33 : 20,852.42 = 5,140.65 : x
  2. Step 2: Convert to fraction form
    13,911.33/20,852.42 = 5,140.65/x
  3. Step 3: Cross multiply
    13,911.33x = 20,852.42 × 5,140.65
  4. Step 4: Simplify right side
    13,911.33x = 107,194,967.17
  5. Step 5: Solve for x
    x = 107,194,967.17/13,911.33
  6. Step 6: Final answer
    x = 7,705.59

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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.