Home / 18,897,806.90-28,346,710.35-12,851,189.30

Finding the Fourth Proportional to 18,897,806.90, 28,346,710.35 and 12,851,189.30

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Solution

The fourth proportional to 18,897,806.90, 28,346,710.35 and 12,851,189.30 is: 19,276,783.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,897,806.90 : 28,346,710.35 = 12,851,189.30 : x
  2. Step 2: Convert to fraction form
    18,897,806.90/28,346,710.35 = 12,851,189.30/x
  3. Step 3: Cross multiply
    18,897,806.90x = 28,346,710.35 × 12,851,189.30
  4. Step 4: Simplify right side
    18,897,806.90x = 364,288,940,740,119.31
  5. Step 5: Solve for x
    x = 364,288,940,740,119.31/18,897,806.90
  6. Step 6: Final answer
    x = 19,276,783.95

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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.