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Finding the Fourth Proportional to 13,010.10, 19,515.15 and 9,729.60

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Solution

The fourth proportional to 13,010.10, 19,515.15 and 9,729.60 is: 14,594.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,010.10 : 19,515.15 = 9,729.60 : x
  2. Step 2: Convert to fraction form
    13,010.10/19,515.15 = 9,729.60/x
  3. Step 3: Cross multiply
    13,010.10x = 19,515.15 × 9,729.60
  4. Step 4: Simplify right side
    13,010.10x = 189,874,603.44
  5. Step 5: Solve for x
    x = 189,874,603.44/13,010.10
  6. Step 6: Final answer
    x = 14,594.40

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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.