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Finding the Fourth Proportional to 15,626.16, 21,566.88 and 8,912.16

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Solution

The fourth proportional to 15,626.16, 21,566.88 and 8,912.16 is: 12,300.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,626.16 : 21,566.88 = 8,912.16 : x
  2. Step 2: Convert to fraction form
    15,626.16/21,566.88 = 8,912.16/x
  3. Step 3: Cross multiply
    15,626.16x = 21,566.88 × 8,912.16
  4. Step 4: Simplify right side
    15,626.16x = 192,207,485.26
  5. Step 5: Solve for x
    x = 192,207,485.26/15,626.16
  6. Step 6: Final answer
    x = 12,300.37

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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.