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Finding the Fourth Proportional to 17,915.30, 26,863.35 and 7,515.30

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Solution

The fourth proportional to 17,915.30, 26,863.35 and 7,515.30 is: 11,268.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,915.30 : 26,863.35 = 7,515.30 : x
  2. Step 2: Convert to fraction form
    17,915.30/26,863.35 = 7,515.30/x
  3. Step 3: Cross multiply
    17,915.30x = 26,863.35 × 7,515.30
  4. Step 4: Simplify right side
    17,915.30x = 201,886,134.26
  5. Step 5: Solve for x
    x = 201,886,134.26/17,915.30
  6. Step 6: Final answer
    x = 11,268.92

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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.