Home / 13,428,308.76-20,128,120.38-7,658,620.44

Finding the Fourth Proportional to 13,428,308.76, 20,128,120.38 and 7,658,620.44

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Solution

The fourth proportional to 13,428,308.76, 20,128,120.38 and 7,658,620.44 is: 11,479,750.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428,308.76 : 20,128,120.38 = 7,658,620.44 : x
  2. Step 2: Convert to fraction form
    13,428,308.76/20,128,120.38 = 7,658,620.44/x
  3. Step 3: Cross multiply
    13,428,308.76x = 20,128,120.38 × 7,658,620.44
  4. Step 4: Simplify right side
    13,428,308.76x = 154,153,634,161,048.56
  5. Step 5: Solve for x
    x = 154,153,634,161,048.56/13,428,308.76
  6. Step 6: Final answer
    x = 11,479,750.50

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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.