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Finding the Fourth Proportional to 12,476,657.70, 18,714,986.55 and 10,650,075.30

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Solution

The fourth proportional to 12,476,657.70, 18,714,986.55 and 10,650,075.30 is: 15,975,112.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,476,657.70 : 18,714,986.55 = 10,650,075.30 : x
  2. Step 2: Convert to fraction form
    12,476,657.70/18,714,986.55 = 10,650,075.30/x
  3. Step 3: Cross multiply
    12,476,657.70x = 18,714,986.55 × 10,650,075.30
  4. Step 4: Simplify right side
    12,476,657.70x = 199,316,015,995,987.25
  5. Step 5: Solve for x
    x = 199,316,015,995,987.25/12,476,657.70
  6. Step 6: Final answer
    x = 15,975,112.95

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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.