Home / 13,317.84-19,980.74-3,958.16

Finding the Fourth Proportional to 13,317.84, 19,980.74 and 3,958.16

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Solution

The fourth proportional to 13,317.84, 19,980.74 and 3,958.16 is: 5,938.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,317.84 : 19,980.74 = 3,958.16 : x
  2. Step 2: Convert to fraction form
    13,317.84/19,980.74 = 3,958.16/x
  3. Step 3: Cross multiply
    13,317.84x = 19,980.74 × 3,958.16
  4. Step 4: Simplify right side
    13,317.84x = 79,086,965.84
  5. Step 5: Solve for x
    x = 79,086,965.84/13,317.84
  6. Step 6: Final answer
    x = 5,938.42

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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.