Home / 15,812.08-21,821.79-8,738.35

Finding the Fourth Proportional to 15,812.08, 21,821.79 and 8,738.35

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Solution

The fourth proportional to 15,812.08, 21,821.79 and 8,738.35 is: 12,059.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,812.08 : 21,821.79 = 8,738.35 : x
  2. Step 2: Convert to fraction form
    15,812.08/21,821.79 = 8,738.35/x
  3. Step 3: Cross multiply
    15,812.08x = 21,821.79 × 8,738.35
  4. Step 4: Simplify right side
    15,812.08x = 190,686,438.65
  5. Step 5: Solve for x
    x = 190,686,438.65/15,812.08
  6. Step 6: Final answer
    x = 12,059.54

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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.