Home / 18,820.89-28,231.32-5,673.26

Finding the Fourth Proportional to 18,820.89, 28,231.32 and 5,673.26

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Solution

The fourth proportional to 18,820.89, 28,231.32 and 5,673.26 is: 8,509.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.89 : 28,231.32 = 5,673.26 : x
  2. Step 2: Convert to fraction form
    18,820.89/28,231.32 = 5,673.26/x
  3. Step 3: Cross multiply
    18,820.89x = 28,231.32 × 5,673.26
  4. Step 4: Simplify right side
    18,820.89x = 160,163,632.52
  5. Step 5: Solve for x
    x = 160,163,632.52/18,820.89
  6. Step 6: Final answer
    x = 8,509.89

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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.