Home / 13,360,379.23-18,431,842.61-8,129,193.80

Finding the Fourth Proportional to 13,360,379.23, 18,431,842.61 and 8,129,193.80

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Solution

The fourth proportional to 13,360,379.23, 18,431,842.61 and 8,129,193.80 is: 11,214,952.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,360,379.23 : 18,431,842.61 = 8,129,193.80 : x
  2. Step 2: Convert to fraction form
    13,360,379.23/18,431,842.61 = 8,129,193.80/x
  3. Step 3: Cross multiply
    13,360,379.23x = 18,431,842.61 × 8,129,193.80
  4. Step 4: Simplify right side
    13,360,379.23x = 149,836,020,627,141.84
  5. Step 5: Solve for x
    x = 149,836,020,627,141.84/13,360,379.23
  6. Step 6: Final answer
    x = 11,214,952.67

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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.