Home / 13,742.49-18,965.58-7,774.14

Finding the Fourth Proportional to 13,742.49, 18,965.58 and 7,774.14

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Solution

The fourth proportional to 13,742.49, 18,965.58 and 7,774.14 is: 10,728.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.49 : 18,965.58 = 7,774.14 : x
  2. Step 2: Convert to fraction form
    13,742.49/18,965.58 = 7,774.14/x
  3. Step 3: Cross multiply
    13,742.49x = 18,965.58 × 7,774.14
  4. Step 4: Simplify right side
    13,742.49x = 147,441,074.10
  5. Step 5: Solve for x
    x = 147,441,074.10/13,742.49
  6. Step 6: Final answer
    x = 10,728.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.