Home / 20,986,739.80-31,480,109.70-7,524,928.60

Finding the Fourth Proportional to 20,986,739.80, 31,480,109.70 and 7,524,928.60

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Solution

The fourth proportional to 20,986,739.80, 31,480,109.70 and 7,524,928.60 is: 11,287,392.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,986,739.80 : 31,480,109.70 = 7,524,928.60 : x
  2. Step 2: Convert to fraction form
    20,986,739.80/31,480,109.70 = 7,524,928.60/x
  3. Step 3: Cross multiply
    20,986,739.80x = 31,480,109.70 × 7,524,928.60
  4. Step 4: Simplify right side
    20,986,739.80x = 236,885,577,812,667.41
  5. Step 5: Solve for x
    x = 236,885,577,812,667.41/20,986,739.80
  6. Step 6: Final answer
    x = 11,287,392.90

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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.