Home / 20,118,172.40-30,177,357.02-7,338,656.60

Finding the Fourth Proportional to 20,118,172.40, 30,177,357.02 and 7,338,656.60

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Solution

The fourth proportional to 20,118,172.40, 30,177,357.02 and 7,338,656.60 is: 11,008,020.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118,172.40 : 30,177,357.02 = 7,338,656.60 : x
  2. Step 2: Convert to fraction form
    20,118,172.40/30,177,357.02 = 7,338,656.60/x
  3. Step 3: Cross multiply
    20,118,172.40x = 30,177,357.02 × 7,338,656.60
  4. Step 4: Simplify right side
    20,118,172.40x = 221,461,260,265,379.31
  5. Step 5: Solve for x
    x = 221,461,260,265,379.31/20,118,172.40
  6. Step 6: Final answer
    x = 11,008,020.80

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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.