Home / 36,139.40-54,210.62-12,765.96

Finding the Fourth Proportional to 36,139.40, 54,210.62 and 12,765.96

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Solution

The fourth proportional to 36,139.40, 54,210.62 and 12,765.96 is: 19,149.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,139.40 : 54,210.62 = 12,765.96 : x
  2. Step 2: Convert to fraction form
    36,139.40/54,210.62 = 12,765.96/x
  3. Step 3: Cross multiply
    36,139.40x = 54,210.62 × 12,765.96
  4. Step 4: Simplify right side
    36,139.40x = 692,050,606.50
  5. Step 5: Solve for x
    x = 692,050,606.50/36,139.40
  6. Step 6: Final answer
    x = 19,149.48

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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.