Home / 12,458,470.80-18,687,706.20-12,290,509.20

Finding the Fourth Proportional to 12,458,470.80, 18,687,706.20 and 12,290,509.20

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Solution

The fourth proportional to 12,458,470.80, 18,687,706.20 and 12,290,509.20 is: 18,435,763.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458,470.80 : 18,687,706.20 = 12,290,509.20 : x
  2. Step 2: Convert to fraction form
    12,458,470.80/18,687,706.20 = 12,290,509.20/x
  3. Step 3: Cross multiply
    12,458,470.80x = 18,687,706.20 × 12,290,509.20
  4. Step 4: Simplify right side
    12,458,470.80x = 229,681,424,977,997.03
  5. Step 5: Solve for x
    x = 229,681,424,977,997.03/12,458,470.80
  6. Step 6: Final answer
    x = 18,435,763.80

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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.