Home / 12,621,855.90-18,945,225.45-6,239,315.10

Finding the Fourth Proportional to 12,621,855.90, 18,945,225.45 and 6,239,315.10

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Solution

The fourth proportional to 12,621,855.90, 18,945,225.45 and 6,239,315.10 is: 9,365,122.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621,855.90 : 18,945,225.45 = 6,239,315.10 : x
  2. Step 2: Convert to fraction form
    12,621,855.90/18,945,225.45 = 6,239,315.10/x
  3. Step 3: Cross multiply
    12,621,855.90x = 18,945,225.45 × 6,239,315.10
  4. Step 4: Simplify right side
    12,621,855.90x = 118,205,231,223,089.28
  5. Step 5: Solve for x
    x = 118,205,231,223,089.28/12,621,855.90
  6. Step 6: Final answer
    x = 9,365,122.86

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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.