Home / 12,283.81-18,428.34-3,964.30

Finding the Fourth Proportional to 12,283.81, 18,428.34 and 3,964.30

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Solution

The fourth proportional to 12,283.81, 18,428.34 and 3,964.30 is: 5,947.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,283.81 : 18,428.34 = 3,964.30 : x
  2. Step 2: Convert to fraction form
    12,283.81/18,428.34 = 3,964.30/x
  3. Step 3: Cross multiply
    12,283.81x = 18,428.34 × 3,964.30
  4. Step 4: Simplify right side
    12,283.81x = 73,055,468.26
  5. Step 5: Solve for x
    x = 73,055,468.26/12,283.81
  6. Step 6: Final answer
    x = 5,947.30

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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.