Home / 20,579.19-28,400.39-11,627.07

Finding the Fourth Proportional to 20,579.19, 28,400.39 and 11,627.07

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Solution

The fourth proportional to 20,579.19, 28,400.39 and 11,627.07 is: 16,045.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.19 : 28,400.39 = 11,627.07 : x
  2. Step 2: Convert to fraction form
    20,579.19/28,400.39 = 11,627.07/x
  3. Step 3: Cross multiply
    20,579.19x = 28,400.39 × 11,627.07
  4. Step 4: Simplify right side
    20,579.19x = 330,213,322.56
  5. Step 5: Solve for x
    x = 330,213,322.56/20,579.19
  6. Step 6: Final answer
    x = 16,045.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.