Home / 20,739,958.57-28,616,870.02-11,917,705.20

Finding the Fourth Proportional to 20,739,958.57, 28,616,870.02 and 11,917,705.20

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Solution

The fourth proportional to 20,739,958.57, 28,616,870.02 and 11,917,705.20 is: 16,443,977.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739,958.57 : 28,616,870.02 = 11,917,705.20 : x
  2. Step 2: Convert to fraction form
    20,739,958.57/28,616,870.02 = 11,917,705.20/x
  3. Step 3: Cross multiply
    20,739,958.57x = 28,616,870.02 × 11,917,705.20
  4. Step 4: Simplify right side
    20,739,958.57x = 341,047,420,516,890.88
  5. Step 5: Solve for x
    x = 341,047,420,516,890.88/20,739,958.57
  6. Step 6: Final answer
    x = 16,443,977.91

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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.