Home / 20,764,838.40-31,147,257.60-12,261,782.40

Finding the Fourth Proportional to 20,764,838.40, 31,147,257.60 and 12,261,782.40

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Solution

The fourth proportional to 20,764,838.40, 31,147,257.60 and 12,261,782.40 is: 18,392,673.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764,838.40 : 31,147,257.60 = 12,261,782.40 : x
  2. Step 2: Convert to fraction form
    20,764,838.40/31,147,257.60 = 12,261,782.40/x
  3. Step 3: Cross multiply
    20,764,838.40x = 31,147,257.60 × 12,261,782.40
  4. Step 4: Simplify right side
    20,764,838.40x = 381,920,895,047,946.25
  5. Step 5: Solve for x
    x = 381,920,895,047,946.25/20,764,838.40
  6. Step 6: Final answer
    x = 18,392,673.60

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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.