Home / 15,004,446.67-20,706,235.80-8,128,928.73

Finding the Fourth Proportional to 15,004,446.67, 20,706,235.80 and 8,128,928.73

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Solution

The fourth proportional to 15,004,446.67, 20,706,235.80 and 8,128,928.73 is: 11,217,975.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004,446.67 : 20,706,235.80 = 8,128,928.73 : x
  2. Step 2: Convert to fraction form
    15,004,446.67/20,706,235.80 = 8,128,928.73/x
  3. Step 3: Cross multiply
    15,004,446.67x = 20,706,235.80 × 8,128,928.73
  4. Step 4: Simplify right side
    15,004,446.67x = 168,319,515,084,774.56
  5. Step 5: Solve for x
    x = 168,319,515,084,774.56/15,004,446.67
  6. Step 6: Final answer
    x = 11,217,975.50

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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.