Home / 18,828.15-28,242.43-5,680.64

Finding the Fourth Proportional to 18,828.15, 28,242.43 and 5,680.64

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Solution

The fourth proportional to 18,828.15, 28,242.43 and 5,680.64 is: 8,521.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,828.15 : 28,242.43 = 5,680.64 : x
  2. Step 2: Convert to fraction form
    18,828.15/28,242.43 = 5,680.64/x
  3. Step 3: Cross multiply
    18,828.15x = 28,242.43 × 5,680.64
  4. Step 4: Simplify right side
    18,828.15x = 160,434,907.94
  5. Step 5: Solve for x
    x = 160,434,907.94/18,828.15
  6. Step 6: Final answer
    x = 8,521.01

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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.