Home / 18,921.85-28,382.55-5,774.26

Finding the Fourth Proportional to 18,921.85, 28,382.55 and 5,774.26

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Solution

The fourth proportional to 18,921.85, 28,382.55 and 5,774.26 is: 8,661.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,921.85 : 28,382.55 = 5,774.26 : x
  2. Step 2: Convert to fraction form
    18,921.85/28,382.55 = 5,774.26/x
  3. Step 3: Cross multiply
    18,921.85x = 28,382.55 × 5,774.26
  4. Step 4: Simplify right side
    18,921.85x = 163,888,296.08
  5. Step 5: Solve for x
    x = 163,888,296.08/18,921.85
  6. Step 6: Final answer
    x = 8,661.32

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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.