Home / 15,450.18-21,321.29-8,376.63

Finding the Fourth Proportional to 15,450.18, 21,321.29 and 8,376.63

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Solution

The fourth proportional to 15,450.18, 21,321.29 and 8,376.63 is: 11,559.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,450.18 : 21,321.29 = 8,376.63 : x
  2. Step 2: Convert to fraction form
    15,450.18/21,321.29 = 8,376.63/x
  3. Step 3: Cross multiply
    15,450.18x = 21,321.29 × 8,376.63
  4. Step 4: Simplify right side
    15,450.18x = 178,600,515.57
  5. Step 5: Solve for x
    x = 178,600,515.57/15,450.18
  6. Step 6: Final answer
    x = 11,559.77

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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.