Home / 8,620.40-12,930.36-4,673.36

Finding the Fourth Proportional to 8,620.40, 12,930.36 and 4,673.36

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Solution

The fourth proportional to 8,620.40, 12,930.36 and 4,673.36 is: 7,009.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.40 : 12,930.36 = 4,673.36 : x
  2. Step 2: Convert to fraction form
    8,620.40/12,930.36 = 4,673.36/x
  3. Step 3: Cross multiply
    8,620.40x = 12,930.36 × 4,673.36
  4. Step 4: Simplify right side
    8,620.40x = 60,428,227.21
  5. Step 5: Solve for x
    x = 60,428,227.21/8,620.40
  6. Step 6: Final answer
    x = 7,009.91

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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.