Home / 21,470,942.40-32,181,530.40-8,685,124.80

Finding the Fourth Proportional to 21,470,942.40, 32,181,530.40 and 8,685,124.80

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Solution

The fourth proportional to 21,470,942.40, 32,181,530.40 and 8,685,124.80 is: 13,017,621.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,470,942.40 : 32,181,530.40 = 8,685,124.80 : x
  2. Step 2: Convert to fraction form
    21,470,942.40/32,181,530.40 = 8,685,124.80/x
  3. Step 3: Cross multiply
    21,470,942.40x = 32,181,530.40 × 8,685,124.80
  4. Step 4: Simplify right side
    21,470,942.40x = 279,500,607,778,993.94
  5. Step 5: Solve for x
    x = 279,500,607,778,993.94/21,470,942.40
  6. Step 6: Final answer
    x = 13,017,621.80

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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.