Home / 36,518.89-54,784.40-12,820.29

Finding the Fourth Proportional to 36,518.89, 54,784.40 and 12,820.29

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Solution

The fourth proportional to 36,518.89, 54,784.40 and 12,820.29 is: 19,232.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,518.89 : 54,784.40 = 12,820.29 : x
  2. Step 2: Convert to fraction form
    36,518.89/54,784.40 = 12,820.29/x
  3. Step 3: Cross multiply
    36,518.89x = 54,784.40 × 12,820.29
  4. Step 4: Simplify right side
    36,518.89x = 702,351,895.48
  5. Step 5: Solve for x
    x = 702,351,895.48/36,518.89
  6. Step 6: Final answer
    x = 19,232.56

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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.