Home / 21,292,931.80-31,939,397.70-8,515,408.60

Finding the Fourth Proportional to 21,292,931.80, 31,939,397.70 and 8,515,408.60

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Solution

The fourth proportional to 21,292,931.80, 31,939,397.70 and 8,515,408.60 is: 12,773,112.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292,931.80 : 31,939,397.70 = 8,515,408.60 : x
  2. Step 2: Convert to fraction form
    21,292,931.80/31,939,397.70 = 8,515,408.60/x
  3. Step 3: Cross multiply
    21,292,931.80x = 31,939,397.70 × 8,515,408.60
  4. Step 4: Simplify right side
    21,292,931.80x = 271,977,021,853,400.19
  5. Step 5: Solve for x
    x = 271,977,021,853,400.19/21,292,931.80
  6. Step 6: Final answer
    x = 12,773,112.90

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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.