Home / 20,486,272.40-30,729,408.60-10,282,605.20

Finding the Fourth Proportional to 20,486,272.40, 30,729,408.60 and 10,282,605.20

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Solution

The fourth proportional to 20,486,272.40, 30,729,408.60 and 10,282,605.20 is: 15,423,907.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486,272.40 : 30,729,408.60 = 10,282,605.20 : x
  2. Step 2: Convert to fraction form
    20,486,272.40/30,729,408.60 = 10,282,605.20/x
  3. Step 3: Cross multiply
    20,486,272.40x = 30,729,408.60 × 10,282,605.20
  4. Step 4: Simplify right side
    20,486,272.40x = 315,978,376,663,284.69
  5. Step 5: Solve for x
    x = 315,978,376,663,284.69/20,486,272.40
  6. Step 6: Final answer
    x = 15,423,907.80

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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.