Home / 18,992.36-26,226.93-12,289.55

Finding the Fourth Proportional to 18,992.36, 26,226.93 and 12,289.55

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Solution

The fourth proportional to 18,992.36, 26,226.93 and 12,289.55 is: 16,970.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,992.36 : 26,226.93 = 12,289.55 : x
  2. Step 2: Convert to fraction form
    18,992.36/26,226.93 = 12,289.55/x
  3. Step 3: Cross multiply
    18,992.36x = 26,226.93 × 12,289.55
  4. Step 4: Simplify right side
    18,992.36x = 322,317,167.58
  5. Step 5: Solve for x
    x = 322,317,167.58/18,992.36
  6. Step 6: Final answer
    x = 16,970.89

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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.