Home / 15,626.90-21,564.04-8,912.80

Finding the Fourth Proportional to 15,626.90, 21,564.04 and 8,912.80

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Solution

The fourth proportional to 15,626.90, 21,564.04 and 8,912.80 is: 12,299.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,626.90 : 21,564.04 = 8,912.80 : x
  2. Step 2: Convert to fraction form
    15,626.90/21,564.04 = 8,912.80/x
  3. Step 3: Cross multiply
    15,626.90x = 21,564.04 × 8,912.80
  4. Step 4: Simplify right side
    15,626.90x = 192,195,975.71
  5. Step 5: Solve for x
    x = 192,195,975.71/15,626.90
  6. Step 6: Final answer
    x = 12,299.05

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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.