Home / 15,108.93-20,846.97-9,140.49

Finding the Fourth Proportional to 15,108.93, 20,846.97 and 9,140.49

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Solution

The fourth proportional to 15,108.93, 20,846.97 and 9,140.49 is: 12,611.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,108.93 : 20,846.97 = 9,140.49 : x
  2. Step 2: Convert to fraction form
    15,108.93/20,846.97 = 9,140.49/x
  3. Step 3: Cross multiply
    15,108.93x = 20,846.97 × 9,140.49
  4. Step 4: Simplify right side
    15,108.93x = 190,551,520.82
  5. Step 5: Solve for x
    x = 190,551,520.82/15,108.93
  6. Step 6: Final answer
    x = 12,611.85

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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.