Home / 13,742.58-18,964.47-7,454.95

Finding the Fourth Proportional to 13,742.58, 18,964.47 and 7,454.95

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Solution

The fourth proportional to 13,742.58, 18,964.47 and 7,454.95 is: 10,287.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.58 : 18,964.47 = 7,454.95 : x
  2. Step 2: Convert to fraction form
    13,742.58/18,964.47 = 7,454.95/x
  3. Step 3: Cross multiply
    13,742.58x = 18,964.47 × 7,454.95
  4. Step 4: Simplify right side
    13,742.58x = 141,379,175.63
  5. Step 5: Solve for x
    x = 141,379,175.63/13,742.58
  6. Step 6: Final answer
    x = 10,287.67

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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.