Home / 12,782,518.80-19,184,664.60-5,214,915.60

Finding the Fourth Proportional to 12,782,518.80, 19,184,664.60 and 5,214,915.60

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Solution

The fourth proportional to 12,782,518.80, 19,184,664.60 and 5,214,915.60 is: 7,826,814.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,782,518.80 : 19,184,664.60 = 5,214,915.60 : x
  2. Step 2: Convert to fraction form
    12,782,518.80/19,184,664.60 = 5,214,915.60/x
  3. Step 3: Cross multiply
    12,782,518.80x = 19,184,664.60 × 5,214,915.60
  4. Step 4: Simplify right side
    12,782,518.80x = 100,046,406,703,307.77
  5. Step 5: Solve for x
    x = 100,046,406,703,307.77/12,782,518.80
  6. Step 6: Final answer
    x = 7,826,814.75

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1.5x scale

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.