Home / 19,579.45-29,302.64-12,087.78

Finding the Fourth Proportional to 19,579.45, 29,302.64 and 12,087.78

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Solution

The fourth proportional to 19,579.45, 29,302.64 and 12,087.78 is: 18,090.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,579.45 : 29,302.64 = 12,087.78 : x
  2. Step 2: Convert to fraction form
    19,579.45/29,302.64 = 12,087.78/x
  3. Step 3: Cross multiply
    19,579.45x = 29,302.64 × 12,087.78
  4. Step 4: Simplify right side
    19,579.45x = 354,203,865.74
  5. Step 5: Solve for x
    x = 354,203,865.74/19,579.45
  6. Step 6: Final answer
    x = 18,090.59

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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.