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Finding the Fourth Proportional to 15,671.16, 23,469.48 and 8,640.36

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Solution

The fourth proportional to 15,671.16, 23,469.48 and 8,640.36 is: 12,940.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,671.16 : 23,469.48 = 8,640.36 : x
  2. Step 2: Convert to fraction form
    15,671.16/23,469.48 = 8,640.36/x
  3. Step 3: Cross multiply
    15,671.16x = 23,469.48 × 8,640.36
  4. Step 4: Simplify right side
    15,671.16x = 202,784,756.21
  5. Step 5: Solve for x
    x = 202,784,756.21/15,671.16
  6. Step 6: Final answer
    x = 12,940.00

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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.