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Finding the Fourth Proportional to 13,122,913.20, 18,329,563.20 and 13,122,913.20

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Solution

The fourth proportional to 13,122,913.20, 18,329,563.20 and 13,122,913.20 is: 18,329,563.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122,913.20 : 18,329,563.20 = 13,122,913.20 : x
  2. Step 2: Convert to fraction form
    13,122,913.20/18,329,563.20 = 13,122,913.20/x
  3. Step 3: Cross multiply
    13,122,913.20x = 18,329,563.20 × 13,122,913.20
  4. Step 4: Simplify right side
    13,122,913.20x = 240,537,266,867,514.22
  5. Step 5: Solve for x
    x = 240,537,266,867,514.22/13,122,913.20
  6. Step 6: Final answer
    x = 18,329,563.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.