Home / 18,962.54-28,441.59-11,921.77

Finding the Fourth Proportional to 18,962.54, 28,441.59 and 11,921.77

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Solution

The fourth proportional to 18,962.54, 28,441.59 and 11,921.77 is: 17,881.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,962.54 : 28,441.59 = 11,921.77 : x
  2. Step 2: Convert to fraction form
    18,962.54/28,441.59 = 11,921.77/x
  3. Step 3: Cross multiply
    18,962.54x = 28,441.59 × 11,921.77
  4. Step 4: Simplify right side
    18,962.54x = 339,074,129.09
  5. Step 5: Solve for x
    x = 339,074,129.09/18,962.54
  6. Step 6: Final answer
    x = 17,881.26

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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.