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Finding the Fourth Proportional to 12,606,480.10, 18,909,720.15 and 12,606,480.10

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Solution

The fourth proportional to 12,606,480.10, 18,909,720.15 and 12,606,480.10 is: 18,909,720.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,606,480.10 : 18,909,720.15 = 12,606,480.10 : x
  2. Step 2: Convert to fraction form
    12,606,480.10/18,909,720.15 = 12,606,480.10/x
  3. Step 3: Cross multiply
    12,606,480.10x = 18,909,720.15 × 12,606,480.10
  4. Step 4: Simplify right side
    12,606,480.10x = 238,385,010,767,544
  5. Step 5: Solve for x
    x = 238,385,010,767,544/12,606,480.10
  6. Step 6: Final answer
    x = 18,909,720.15

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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.