Home / 13,938.06-19,236.62-8,905.64

Finding the Fourth Proportional to 13,938.06, 19,236.62 and 8,905.64

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Solution

The fourth proportional to 13,938.06, 19,236.62 and 8,905.64 is: 12,291.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.06 : 19,236.62 = 8,905.64 : x
  2. Step 2: Convert to fraction form
    13,938.06/19,236.62 = 8,905.64/x
  3. Step 3: Cross multiply
    13,938.06x = 19,236.62 × 8,905.64
  4. Step 4: Simplify right side
    13,938.06x = 171,314,271.83
  5. Step 5: Solve for x
    x = 171,314,271.83/13,938.06
  6. Step 6: Final answer
    x = 12,291.11

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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.