Home / 12,016.40-18,032.70-5,439.20

Finding the Fourth Proportional to 12,016.40, 18,032.70 and 5,439.20

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Solution

The fourth proportional to 12,016.40, 18,032.70 and 5,439.20 is: 8,162.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,016.40 : 18,032.70 = 5,439.20 : x
  2. Step 2: Convert to fraction form
    12,016.40/18,032.70 = 5,439.20/x
  3. Step 3: Cross multiply
    12,016.40x = 18,032.70 × 5,439.20
  4. Step 4: Simplify right side
    12,016.40x = 98,083,461.84
  5. Step 5: Solve for x
    x = 98,083,461.84/12,016.40
  6. Step 6: Final answer
    x = 8,162.47

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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.