Home / 12,742.68-19,121.53-4,851.84

Finding the Fourth Proportional to 12,742.68, 19,121.53 and 4,851.84

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Solution

The fourth proportional to 12,742.68, 19,121.53 and 4,851.84 is: 7,280.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,742.68 : 19,121.53 = 4,851.84 : x
  2. Step 2: Convert to fraction form
    12,742.68/19,121.53 = 4,851.84/x
  3. Step 3: Cross multiply
    12,742.68x = 19,121.53 × 4,851.84
  4. Step 4: Simplify right side
    12,742.68x = 92,774,604.12
  5. Step 5: Solve for x
    x = 92,774,604.12/12,742.68
  6. Step 6: Final answer
    x = 7,280.62

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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.