Home / 20,804,583.85-31,206,875.78-12,742,427.05

Finding the Fourth Proportional to 20,804,583.85, 31,206,875.78 and 12,742,427.05

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Solution

The fourth proportional to 20,804,583.85, 31,206,875.78 and 12,742,427.05 is: 19,113,640.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804,583.85 : 31,206,875.78 = 12,742,427.05 : x
  2. Step 2: Convert to fraction form
    20,804,583.85/31,206,875.78 = 12,742,427.05/x
  3. Step 3: Cross multiply
    20,804,583.85x = 31,206,875.78 × 12,742,427.05
  4. Step 4: Simplify right side
    20,804,583.85x = 397,651,338,021,349.69
  5. Step 5: Solve for x
    x = 397,651,338,021,349.69/20,804,583.85
  6. Step 6: Final answer
    x = 19,113,640.58

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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.