Home / 15,323.06-21,145.78-8,954.03

Finding the Fourth Proportional to 15,323.06, 21,145.78 and 8,954.03

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Solution

The fourth proportional to 15,323.06, 21,145.78 and 8,954.03 is: 12,356.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,323.06 : 21,145.78 = 8,954.03 : x
  2. Step 2: Convert to fraction form
    15,323.06/21,145.78 = 8,954.03/x
  3. Step 3: Cross multiply
    15,323.06x = 21,145.78 × 8,954.03
  4. Step 4: Simplify right side
    15,323.06x = 189,339,948.49
  5. Step 5: Solve for x
    x = 189,339,948.49/15,323.06
  6. Step 6: Final answer
    x = 12,356.54

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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.