Home / 15,450.14-21,321.36-8,376.68

Finding the Fourth Proportional to 15,450.14, 21,321.36 and 8,376.68

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Solution

The fourth proportional to 15,450.14, 21,321.36 and 8,376.68 is: 11,559.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,450.14 : 21,321.36 = 8,376.68 : x
  2. Step 2: Convert to fraction form
    15,450.14/21,321.36 = 8,376.68/x
  3. Step 3: Cross multiply
    15,450.14x = 21,321.36 × 8,376.68
  4. Step 4: Simplify right side
    15,450.14x = 178,602,263.19
  5. Step 5: Solve for x
    x = 178,602,263.19/15,450.14
  6. Step 6: Final answer
    x = 11,559.91

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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.