Home / 12,657.41-18,872.14-11,603.55

Finding the Fourth Proportional to 12,657.41, 18,872.14 and 11,603.55

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Solution

The fourth proportional to 12,657.41, 18,872.14 and 11,603.55 is: 17,300.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,657.41 : 18,872.14 = 11,603.55 : x
  2. Step 2: Convert to fraction form
    12,657.41/18,872.14 = 11,603.55/x
  3. Step 3: Cross multiply
    12,657.41x = 18,872.14 × 11,603.55
  4. Step 4: Simplify right side
    12,657.41x = 218,983,883.62
  5. Step 5: Solve for x
    x = 218,983,883.62/12,657.41
  6. Step 6: Final answer
    x = 17,300.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.