Home / 20,729,225.36-28,615,503.42-13,390,636.11

Finding the Fourth Proportional to 20,729,225.36, 28,615,503.42 and 13,390,636.11

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Solution

The fourth proportional to 20,729,225.36, 28,615,503.42 and 13,390,636.11 is: 18,485,003.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729,225.36 : 28,615,503.42 = 13,390,636.11 : x
  2. Step 2: Convert to fraction form
    20,729,225.36/28,615,503.42 = 13,390,636.11/x
  3. Step 3: Cross multiply
    20,729,225.36x = 28,615,503.42 × 13,390,636.11
  4. Step 4: Simplify right side
    20,729,225.36x = 383,179,793,401,680.50
  5. Step 5: Solve for x
    x = 383,179,793,401,680.50/20,729,225.36
  6. Step 6: Final answer
    x = 18,485,003.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.