Home / 18,886,441.20-28,329,661.80-12,083,996.40

Finding the Fourth Proportional to 18,886,441.20, 28,329,661.80 and 12,083,996.40

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Solution

The fourth proportional to 18,886,441.20, 28,329,661.80 and 12,083,996.40 is: 18,125,994.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886,441.20 : 28,329,661.80 = 12,083,996.40 : x
  2. Step 2: Convert to fraction form
    18,886,441.20/28,329,661.80 = 12,083,996.40/x
  3. Step 3: Cross multiply
    18,886,441.20x = 28,329,661.80 × 12,083,996.40
  4. Step 4: Simplify right side
    18,886,441.20x = 342,335,531,204,417.56
  5. Step 5: Solve for x
    x = 342,335,531,204,417.56/18,886,441.20
  6. Step 6: Final answer
    x = 18,125,994.60

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1.5x scale

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.