Home / 28,683.12-43,009.90-12,874.60

Finding the Fourth Proportional to 28,683.12, 43,009.90 and 12,874.60

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Solution

The fourth proportional to 28,683.12, 43,009.90 and 12,874.60 is: 19,305.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,683.12 : 43,009.90 = 12,874.60 : x
  2. Step 2: Convert to fraction form
    28,683.12/43,009.90 = 12,874.60/x
  3. Step 3: Cross multiply
    28,683.12x = 43,009.90 × 12,874.60
  4. Step 4: Simplify right side
    28,683.12x = 553,735,258.54
  5. Step 5: Solve for x
    x = 553,735,258.54/28,683.12
  6. Step 6: Final answer
    x = 19,305.27

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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.