Home / 20,401,986.40-30,602,979.60-7,620,830.35

Finding the Fourth Proportional to 20,401,986.40, 30,602,979.60 and 7,620,830.35

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Solution

The fourth proportional to 20,401,986.40, 30,602,979.60 and 7,620,830.35 is: 11,431,245.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401,986.40 : 30,602,979.60 = 7,620,830.35 : x
  2. Step 2: Convert to fraction form
    20,401,986.40/30,602,979.60 = 7,620,830.35/x
  3. Step 3: Cross multiply
    20,401,986.40x = 30,602,979.60 × 7,620,830.35
  4. Step 4: Simplify right side
    20,401,986.40x = 233,220,115,736,110.88
  5. Step 5: Solve for x
    x = 233,220,115,736,110.88/20,401,986.40
  6. Step 6: Final answer
    x = 11,431,245.53

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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.