Home / 28,815.03-39,778.02-20,324.07

Finding the Fourth Proportional to 28,815.03, 39,778.02 and 20,324.07

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Solution

The fourth proportional to 28,815.03, 39,778.02 and 20,324.07 is: 28,056.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,815.03 : 39,778.02 = 20,324.07 : x
  2. Step 2: Convert to fraction form
    28,815.03/39,778.02 = 20,324.07/x
  3. Step 3: Cross multiply
    28,815.03x = 39,778.02 × 20,324.07
  4. Step 4: Simplify right side
    28,815.03x = 808,451,262.94
  5. Step 5: Solve for x
    x = 808,451,262.94/28,815.03
  6. Step 6: Final answer
    x = 28,056.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.