Home / 15,366.95-21,198.61-8,989.37

Finding the Fourth Proportional to 15,366.95, 21,198.61 and 8,989.37

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Solution

The fourth proportional to 15,366.95, 21,198.61 and 8,989.37 is: 12,400.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,366.95 : 21,198.61 = 8,989.37 : x
  2. Step 2: Convert to fraction form
    15,366.95/21,198.61 = 8,989.37/x
  3. Step 3: Cross multiply
    15,366.95x = 21,198.61 × 8,989.37
  4. Step 4: Simplify right side
    15,366.95x = 190,562,148.78
  5. Step 5: Solve for x
    x = 190,562,148.78/15,366.95
  6. Step 6: Final answer
    x = 12,400.78

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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.