Home / 12,689.75-19,035.53-3,923.53

Finding the Fourth Proportional to 12,689.75, 19,035.53 and 3,923.53

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Solution

The fourth proportional to 12,689.75, 19,035.53 and 3,923.53 is: 5,885.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,689.75 : 19,035.53 = 3,923.53 : x
  2. Step 2: Convert to fraction form
    12,689.75/19,035.53 = 3,923.53/x
  3. Step 3: Cross multiply
    12,689.75x = 19,035.53 × 3,923.53
  4. Step 4: Simplify right side
    12,689.75x = 74,686,473.02
  5. Step 5: Solve for x
    x = 74,686,473.02/12,689.75
  6. Step 6: Final answer
    x = 5,885.57

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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.