Home / 36,518.72-54,765.12-13,138.88

Finding the Fourth Proportional to 36,518.72, 54,765.12 and 13,138.88

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Solution

The fourth proportional to 36,518.72, 54,765.12 and 13,138.88 is: 19,703.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,518.72 : 54,765.12 = 13,138.88 : x
  2. Step 2: Convert to fraction form
    36,518.72/54,765.12 = 13,138.88/x
  3. Step 3: Cross multiply
    36,518.72x = 54,765.12 × 13,138.88
  4. Step 4: Simplify right side
    36,518.72x = 719,552,339.87
  5. Step 5: Solve for x
    x = 719,552,339.87/36,518.72
  6. Step 6: Final answer
    x = 19,703.66

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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.