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Finding the Fourth Proportional to 13,278,636.80, 19,886,462.40 and 13,278,636.80

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Solution

The fourth proportional to 13,278,636.80, 19,886,462.40 and 13,278,636.80 is: 19,886,462.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278,636.80 : 19,886,462.40 = 13,278,636.80 : x
  2. Step 2: Convert to fraction form
    13,278,636.80/19,886,462.40 = 13,278,636.80/x
  3. Step 3: Cross multiply
    13,278,636.80x = 19,886,462.40 × 13,278,636.80
  4. Step 4: Simplify right side
    13,278,636.80x = 264,065,111,446,456.31
  5. Step 5: Solve for x
    x = 264,065,111,446,456.31/13,278,636.80
  6. Step 6: Final answer
    x = 19,886,462.40

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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.