Home / 12,020.28-18,030.44-4,227.28

Finding the Fourth Proportional to 12,020.28, 18,030.44 and 4,227.28

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Solution

The fourth proportional to 12,020.28, 18,030.44 and 4,227.28 is: 6,340.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,020.28 : 18,030.44 = 4,227.28 : x
  2. Step 2: Convert to fraction form
    12,020.28/18,030.44 = 4,227.28/x
  3. Step 3: Cross multiply
    12,020.28x = 18,030.44 × 4,227.28
  4. Step 4: Simplify right side
    12,020.28x = 76,219,718.40
  5. Step 5: Solve for x
    x = 76,219,718.40/12,020.28
  6. Step 6: Final answer
    x = 6,340.93

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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.