Home / 36,185.80-54,281.40-12,809.20

Finding the Fourth Proportional to 36,185.80, 54,281.40 and 12,809.20

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Solution

The fourth proportional to 36,185.80, 54,281.40 and 12,809.20 is: 19,214.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,185.80 : 54,281.40 = 12,809.20 : x
  2. Step 2: Convert to fraction form
    36,185.80/54,281.40 = 12,809.20/x
  3. Step 3: Cross multiply
    36,185.80x = 54,281.40 × 12,809.20
  4. Step 4: Simplify right side
    36,185.80x = 695,301,308.88
  5. Step 5: Solve for x
    x = 695,301,308.88/36,185.80
  6. Step 6: Final answer
    x = 19,214.76

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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.