Home / 20,686,559.45-28,547,450.67-11,989,776.59

Finding the Fourth Proportional to 20,686,559.45, 28,547,450.67 and 11,989,776.59

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Solution

The fourth proportional to 20,686,559.45, 28,547,450.67 and 11,989,776.59 is: 16,545,890.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686,559.45 : 28,547,450.67 = 11,989,776.59 : x
  2. Step 2: Convert to fraction form
    20,686,559.45/28,547,450.67 = 11,989,776.59/x
  3. Step 3: Cross multiply
    20,686,559.45x = 28,547,450.67 × 11,989,776.59
  4. Step 4: Simplify right side
    20,686,559.45x = 342,277,555,756,623.12
  5. Step 5: Solve for x
    x = 342,277,555,756,623.12/20,686,559.45
  6. Step 6: Final answer
    x = 16,545,890.90

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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.