Home / 28,626.68-39,505.05-15,880.69

Finding the Fourth Proportional to 28,626.68, 39,505.05 and 15,880.69

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Solution

The fourth proportional to 28,626.68, 39,505.05 and 15,880.69 is: 21,915.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,626.68 : 39,505.05 = 15,880.69 : x
  2. Step 2: Convert to fraction form
    28,626.68/39,505.05 = 15,880.69/x
  3. Step 3: Cross multiply
    28,626.68x = 39,505.05 × 15,880.69
  4. Step 4: Simplify right side
    28,626.68x = 627,367,531.40
  5. Step 5: Solve for x
    x = 627,367,531.40/28,626.68
  6. Step 6: Final answer
    x = 21,915.49

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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.