Home / 35,478.03-53,229.24-12,120.87

Finding the Fourth Proportional to 35,478.03, 53,229.24 and 12,120.87

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Solution

The fourth proportional to 35,478.03, 53,229.24 and 12,120.87 is: 18,185.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,478.03 : 53,229.24 = 12,120.87 : x
  2. Step 2: Convert to fraction form
    35,478.03/53,229.24 = 12,120.87/x
  3. Step 3: Cross multiply
    35,478.03x = 53,229.24 × 12,120.87
  4. Step 4: Simplify right side
    35,478.03x = 645,184,698.24
  5. Step 5: Solve for x
    x = 645,184,698.24/35,478.03
  6. Step 6: Final answer
    x = 18,185.47

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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.