Home / 13,668,885.60-20,489,331.60-7,986,184.80

Finding the Fourth Proportional to 13,668,885.60, 20,489,331.60 and 7,986,184.80

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Solution

The fourth proportional to 13,668,885.60, 20,489,331.60 and 7,986,184.80 is: 11,971,099.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,668,885.60 : 20,489,331.60 = 7,986,184.80 : x
  2. Step 2: Convert to fraction form
    13,668,885.60/20,489,331.60 = 7,986,184.80/x
  3. Step 3: Cross multiply
    13,668,885.60x = 20,489,331.60 × 7,986,184.80
  4. Step 4: Simplify right side
    13,668,885.60x = 163,631,588,586,079.69
  5. Step 5: Solve for x
    x = 163,631,588,586,079.69/13,668,885.60
  6. Step 6: Final answer
    x = 11,971,099.43

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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.