Home / 36,128.64-54,201.06-12,756.90

Finding the Fourth Proportional to 36,128.64, 54,201.06 and 12,756.90

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Solution

The fourth proportional to 36,128.64, 54,201.06 and 12,756.90 is: 19,138.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,128.64 : 54,201.06 = 12,756.90 : x
  2. Step 2: Convert to fraction form
    36,128.64/54,201.06 = 12,756.90/x
  3. Step 3: Cross multiply
    36,128.64x = 54,201.06 × 12,756.90
  4. Step 4: Simplify right side
    36,128.64x = 691,437,502.31
  5. Step 5: Solve for x
    x = 691,437,502.31/36,128.64
  6. Step 6: Final answer
    x = 19,138.21

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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.