Home / 28,986.76-43,480.10-8,210.28

Finding the Fourth Proportional to 28,986.76, 43,480.10 and 8,210.28

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Solution

The fourth proportional to 28,986.76, 43,480.10 and 8,210.28 is: 12,315.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,986.76 : 43,480.10 = 8,210.28 : x
  2. Step 2: Convert to fraction form
    28,986.76/43,480.10 = 8,210.28/x
  3. Step 3: Cross multiply
    28,986.76x = 43,480.10 × 8,210.28
  4. Step 4: Simplify right side
    28,986.76x = 356,983,795.43
  5. Step 5: Solve for x
    x = 356,983,795.43/28,986.76
  6. Step 6: Final answer
    x = 12,315.41

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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.