Home / 12,679.23-19,019.76-3,913.01

Finding the Fourth Proportional to 12,679.23, 19,019.76 and 3,913.01

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Solution

The fourth proportional to 12,679.23, 19,019.76 and 3,913.01 is: 5,869.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,679.23 : 19,019.76 = 3,913.01 : x
  2. Step 2: Convert to fraction form
    12,679.23/19,019.76 = 3,913.01/x
  3. Step 3: Cross multiply
    12,679.23x = 19,019.76 × 3,913.01
  4. Step 4: Simplify right side
    12,679.23x = 74,424,396.41
  5. Step 5: Solve for x
    x = 74,424,396.41/12,679.23
  6. Step 6: Final answer
    x = 5,869.79

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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.