Home / 18,878.52-28,317.60-11,485.08

Finding the Fourth Proportional to 18,878.52, 28,317.60 and 11,485.08

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Solution

The fourth proportional to 18,878.52, 28,317.60 and 11,485.08 is: 17,227.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.52 : 28,317.60 = 11,485.08 : x
  2. Step 2: Convert to fraction form
    18,878.52/28,317.60 = 11,485.08/x
  3. Step 3: Cross multiply
    18,878.52x = 28,317.60 × 11,485.08
  4. Step 4: Simplify right side
    18,878.52x = 325,229,901.41
  5. Step 5: Solve for x
    x = 325,229,901.41/18,878.52
  6. Step 6: Final answer
    x = 17,227.51

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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.