Home / 20,775.06-28,683.33-12,828.96

Finding the Fourth Proportional to 20,775.06, 28,683.33 and 12,828.96

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Solution

The fourth proportional to 20,775.06, 28,683.33 and 12,828.96 is: 17,712.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.06 : 28,683.33 = 12,828.96 : x
  2. Step 2: Convert to fraction form
    20,775.06/28,683.33 = 12,828.96/x
  3. Step 3: Cross multiply
    20,775.06x = 28,683.33 × 12,828.96
  4. Step 4: Simplify right side
    20,775.06x = 367,977,293.24
  5. Step 5: Solve for x
    x = 367,977,293.24/20,775.06
  6. Step 6: Final answer
    x = 17,712.45

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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.