Home / 13,742.32-18,967.12-7,774

Finding the Fourth Proportional to 13,742.32, 18,967.12 and 7,774

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Solution

The fourth proportional to 13,742.32, 18,967.12 and 7,774 is: 10,729.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.32 : 18,967.12 = 7,774 : x
  2. Step 2: Convert to fraction form
    13,742.32/18,967.12 = 7,774/x
  3. Step 3: Cross multiply
    13,742.32x = 18,967.12 × 7,774
  4. Step 4: Simplify right side
    13,742.32x = 147,450,390.88
  5. Step 5: Solve for x
    x = 147,450,390.88/13,742.32
  6. Step 6: Final answer
    x = 10,729.66

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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.