Home / 28,568.26-42,880.10-13,787.58

Finding the Fourth Proportional to 28,568.26, 42,880.10 and 13,787.58

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Solution

The fourth proportional to 28,568.26, 42,880.10 and 13,787.58 is: 20,694.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,568.26 : 42,880.10 = 13,787.58 : x
  2. Step 2: Convert to fraction form
    28,568.26/42,880.10 = 13,787.58/x
  3. Step 3: Cross multiply
    28,568.26x = 42,880.10 × 13,787.58
  4. Step 4: Simplify right side
    28,568.26x = 591,212,809.16
  5. Step 5: Solve for x
    x = 591,212,809.16/28,568.26
  6. Step 6: Final answer
    x = 20,694.74

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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.