Home / 20,993,143.29-28,969,498.92-11,701,478.67

Finding the Fourth Proportional to 20,993,143.29, 28,969,498.92 and 11,701,478.67

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Solution

The fourth proportional to 20,993,143.29, 28,969,498.92 and 11,701,478.67 is: 16,147,461.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993,143.29 : 28,969,498.92 = 11,701,478.67 : x
  2. Step 2: Convert to fraction form
    20,993,143.29/28,969,498.92 = 11,701,478.67/x
  3. Step 3: Cross multiply
    20,993,143.29x = 28,969,498.92 × 11,701,478.67
  4. Step 4: Simplify right side
    20,993,143.29x = 338,985,973,692,968.06
  5. Step 5: Solve for x
    x = 338,985,973,692,968.06/20,993,143.29
  6. Step 6: Final answer
    x = 16,147,461.53

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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.