Home / 20,889,103.65-28,826,286.53-11,721,899.49

Finding the Fourth Proportional to 20,889,103.65, 28,826,286.53 and 11,721,899.49

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Solution

The fourth proportional to 20,889,103.65, 28,826,286.53 and 11,721,899.49 is: 16,175,841.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,889,103.65 : 28,826,286.53 = 11,721,899.49 : x
  2. Step 2: Convert to fraction form
    20,889,103.65/28,826,286.53 = 11,721,899.49/x
  3. Step 3: Cross multiply
    20,889,103.65x = 28,826,286.53 × 11,721,899.49
  4. Step 4: Simplify right side
    20,889,103.65x = 337,898,833,315,991.38
  5. Step 5: Solve for x
    x = 337,898,833,315,991.38/20,889,103.65
  6. Step 6: Final answer
    x = 16,175,841.67

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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.