Home / 20,702,750-28,569,908.30-12,006,078.84

Finding the Fourth Proportional to 20,702,750, 28,569,908.30 and 12,006,078.84

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Solution

The fourth proportional to 20,702,750, 28,569,908.30 and 12,006,078.84 is: 16,568,454.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702,750 : 28,569,908.30 = 12,006,078.84 : x
  2. Step 2: Convert to fraction form
    20,702,750/28,569,908.30 = 12,006,078.84/x
  3. Step 3: Cross multiply
    20,702,750x = 28,569,908.30 × 12,006,078.84
  4. Step 4: Simplify right side
    20,702,750x = 343,012,571,501,370.38
  5. Step 5: Solve for x
    x = 343,012,571,501,370.38/20,702,750
  6. Step 6: Final answer
    x = 16,568,454.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.