Home / 11,689,121.80-16,120,543.62-7,338,613.60

Finding the Fourth Proportional to 11,689,121.80, 16,120,543.62 and 7,338,613.60

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Solution

The fourth proportional to 11,689,121.80, 16,120,543.62 and 7,338,613.60 is: 10,120,729.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,689,121.80 : 16,120,543.62 = 7,338,613.60 : x
  2. Step 2: Convert to fraction form
    11,689,121.80/16,120,543.62 = 7,338,613.60/x
  3. Step 3: Cross multiply
    11,689,121.80x = 16,120,543.62 × 7,338,613.60
  4. Step 4: Simplify right side
    11,689,121.80x = 118,302,440,649,125.22
  5. Step 5: Solve for x
    x = 118,302,440,649,125.22/11,689,121.80
  6. Step 6: Final answer
    x = 10,120,729.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.