Home / 20,736,021.20-31,104,031.80-7,271,099.60

Finding the Fourth Proportional to 20,736,021.20, 31,104,031.80 and 7,271,099.60

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Solution

The fourth proportional to 20,736,021.20, 31,104,031.80 and 7,271,099.60 is: 10,906,649.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,021.20 : 31,104,031.80 = 7,271,099.60 : x
  2. Step 2: Convert to fraction form
    20,736,021.20/31,104,031.80 = 7,271,099.60/x
  3. Step 3: Cross multiply
    20,736,021.20x = 31,104,031.80 × 7,271,099.60
  4. Step 4: Simplify right side
    20,736,021.20x = 226,160,513,179,367.28
  5. Step 5: Solve for x
    x = 226,160,513,179,367.28/20,736,021.20
  6. Step 6: Final answer
    x = 10,906,649.40

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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.