Home / 20,804,974.10-31,207,461.15-12,742,817.30

Finding the Fourth Proportional to 20,804,974.10, 31,207,461.15 and 12,742,817.30

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Solution

The fourth proportional to 20,804,974.10, 31,207,461.15 and 12,742,817.30 is: 19,114,225.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804,974.10 : 31,207,461.15 = 12,742,817.30 : x
  2. Step 2: Convert to fraction form
    20,804,974.10/31,207,461.15 = 12,742,817.30/x
  3. Step 3: Cross multiply
    20,804,974.10x = 31,207,461.15 × 12,742,817.30
  4. Step 4: Simplify right side
    20,804,974.10x = 397,670,975,831,297.88
  5. Step 5: Solve for x
    x = 397,670,975,831,297.88/20,804,974.10
  6. Step 6: Final answer
    x = 19,114,225.95

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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.