Home / 19,338.10-26,678.60-11,781.67

Finding the Fourth Proportional to 19,338.10, 26,678.60 and 11,781.67

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Solution

The fourth proportional to 19,338.10, 26,678.60 and 11,781.67 is: 16,253.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,338.10 : 26,678.60 = 11,781.67 : x
  2. Step 2: Convert to fraction form
    19,338.10/26,678.60 = 11,781.67/x
  3. Step 3: Cross multiply
    19,338.10x = 26,678.60 × 11,781.67
  4. Step 4: Simplify right side
    19,338.10x = 314,318,379.84
  5. Step 5: Solve for x
    x = 314,318,379.84/19,338.10
  6. Step 6: Final answer
    x = 16,253.84

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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.