Home / 20,686,622.10-28,547,537.10-11,989,839.21

Finding the Fourth Proportional to 20,686,622.10, 28,547,537.10 and 11,989,839.21

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Solution

The fourth proportional to 20,686,622.10, 28,547,537.10 and 11,989,839.21 is: 16,545,977.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686,622.10 : 28,547,537.10 = 11,989,839.21 : x
  2. Step 2: Convert to fraction form
    20,686,622.10/28,547,537.10 = 11,989,839.21/x
  3. Step 3: Cross multiply
    20,686,622.10x = 28,547,537.10 × 11,989,839.21
  4. Step 4: Simplify right side
    20,686,622.10x = 342,280,379,619,652.81
  5. Step 5: Solve for x
    x = 342,280,379,619,652.81/20,686,622.10
  6. Step 6: Final answer
    x = 16,545,977.30

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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.