Home / 19,313,011.80-28,991,636.10-11,339,328.60

Finding the Fourth Proportional to 19,313,011.80, 28,991,636.10 and 11,339,328.60

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Solution

The fourth proportional to 19,313,011.80, 28,991,636.10 and 11,339,328.60 is: 17,021,979.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,313,011.80 : 28,991,636.10 = 11,339,328.60 : x
  2. Step 2: Convert to fraction form
    19,313,011.80/28,991,636.10 = 11,339,328.60/x
  3. Step 3: Cross multiply
    19,313,011.80x = 28,991,636.10 × 11,339,328.60
  4. Step 4: Simplify right side
    19,313,011.80x = 328,745,688,389,522.44
  5. Step 5: Solve for x
    x = 328,745,688,389,522.44/19,313,011.80
  6. Step 6: Final answer
    x = 17,021,979.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.