Home / 20,800,506.11-28,713,892.19-12,430,828.55

Finding the Fourth Proportional to 20,800,506.11, 28,713,892.19 and 12,430,828.55

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Solution

The fourth proportional to 20,800,506.11, 28,713,892.19 and 12,430,828.55 is: 17,160,037.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,800,506.11 : 28,713,892.19 = 12,430,828.55 : x
  2. Step 2: Convert to fraction form
    20,800,506.11/28,713,892.19 = 12,430,828.55/x
  3. Step 3: Cross multiply
    20,800,506.11x = 28,713,892.19 × 12,430,828.55
  4. Step 4: Simplify right side
    20,800,506.11x = 356,937,470,611,350.38
  5. Step 5: Solve for x
    x = 356,937,470,611,350.38/20,800,506.11
  6. Step 6: Final answer
    x = 17,160,037.78

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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.