Home / 13,401,889.60-20,080,672.80-7,712,190.40

Finding the Fourth Proportional to 13,401,889.60, 20,080,672.80 and 7,712,190.40

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Solution

The fourth proportional to 13,401,889.60, 20,080,672.80 and 7,712,190.40 is: 11,555,532.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,401,889.60 : 20,080,672.80 = 7,712,190.40 : x
  2. Step 2: Convert to fraction form
    13,401,889.60/20,080,672.80 = 7,712,190.40/x
  3. Step 3: Cross multiply
    13,401,889.60x = 20,080,672.80 × 7,712,190.40
  4. Step 4: Simplify right side
    13,401,889.60x = 154,865,971,993,701.12
  5. Step 5: Solve for x
    x = 154,865,971,993,701.12/13,401,889.60
  6. Step 6: Final answer
    x = 11,555,532.59

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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.