Home / 18,920.08-26,109.32-11,850.40

Finding the Fourth Proportional to 18,920.08, 26,109.32 and 11,850.40

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Solution

The fourth proportional to 18,920.08, 26,109.32 and 11,850.40 is: 16,353.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,920.08 : 26,109.32 = 11,850.40 : x
  2. Step 2: Convert to fraction form
    18,920.08/26,109.32 = 11,850.40/x
  3. Step 3: Cross multiply
    18,920.08x = 26,109.32 × 11,850.40
  4. Step 4: Simplify right side
    18,920.08x = 309,405,885.73
  5. Step 5: Solve for x
    x = 309,405,885.73/18,920.08
  6. Step 6: Final answer
    x = 16,353.31

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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.