Home / 28,568.02-42,879.70-13,787.32

Finding the Fourth Proportional to 28,568.02, 42,879.70 and 13,787.32

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Solution

The fourth proportional to 28,568.02, 42,879.70 and 13,787.32 is: 20,694.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,568.02 : 42,879.70 = 13,787.32 : x
  2. Step 2: Convert to fraction form
    28,568.02/42,879.70 = 13,787.32/x
  3. Step 3: Cross multiply
    28,568.02x = 42,879.70 × 13,787.32
  4. Step 4: Simplify right side
    28,568.02x = 591,196,145.40
  5. Step 5: Solve for x
    x = 591,196,145.40/28,568.02
  6. Step 6: Final answer
    x = 20,694.33

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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.