Home / 43,600.16-65,427.84-18,640.40

Finding the Fourth Proportional to 43,600.16, 65,427.84 and 18,640.40

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Solution

The fourth proportional to 43,600.16, 65,427.84 and 18,640.40 is: 27,972.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,600.16 : 65,427.84 = 18,640.40 : x
  2. Step 2: Convert to fraction form
    43,600.16/65,427.84 = 18,640.40/x
  3. Step 3: Cross multiply
    43,600.16x = 65,427.84 × 18,640.40
  4. Step 4: Simplify right side
    43,600.16x = 1,219,601,108.74
  5. Step 5: Solve for x
    x = 1,219,601,108.74/43,600.16
  6. Step 6: Final answer
    x = 27,972.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.