Home / 18,897,813.90-28,346,720.85-12,851,196.30

Finding the Fourth Proportional to 18,897,813.90, 28,346,720.85 and 12,851,196.30

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Solution

The fourth proportional to 18,897,813.90, 28,346,720.85 and 12,851,196.30 is: 19,276,794.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,897,813.90 : 28,346,720.85 = 12,851,196.30 : x
  2. Step 2: Convert to fraction form
    18,897,813.90/28,346,720.85 = 12,851,196.30/x
  3. Step 3: Cross multiply
    18,897,813.90x = 28,346,720.85 × 12,851,196.30
  4. Step 4: Simplify right side
    18,897,813.90x = 364,289,274,104,652.88
  5. Step 5: Solve for x
    x = 364,289,274,104,652.88/18,897,813.90
  6. Step 6: Final answer
    x = 19,276,794.45

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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.