Home / 20,804,562.85-31,206,844.28-12,742,406.05

Finding the Fourth Proportional to 20,804,562.85, 31,206,844.28 and 12,742,406.05

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Solution

The fourth proportional to 20,804,562.85, 31,206,844.28 and 12,742,406.05 is: 19,113,609.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804,562.85 : 31,206,844.28 = 12,742,406.05 : x
  2. Step 2: Convert to fraction form
    20,804,562.85/31,206,844.28 = 12,742,406.05/x
  3. Step 3: Cross multiply
    20,804,562.85x = 31,206,844.28 × 12,742,406.05
  4. Step 4: Simplify right side
    20,804,562.85x = 397,650,281,354,879.94
  5. Step 5: Solve for x
    x = 397,650,281,354,879.94/20,804,562.85
  6. Step 6: Final answer
    x = 19,113,609.08

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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.