Home / 20,686,545.90-31,047,533.55-9,189,705.60

Finding the Fourth Proportional to 20,686,545.90, 31,047,533.55 and 9,189,705.60

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Solution

The fourth proportional to 20,686,545.90, 31,047,533.55 and 9,189,705.60 is: 13,792,427.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686,545.90 : 31,047,533.55 = 9,189,705.60 : x
  2. Step 2: Convert to fraction form
    20,686,545.90/31,047,533.55 = 9,189,705.60/x
  3. Step 3: Cross multiply
    20,686,545.90x = 31,047,533.55 × 9,189,705.60
  4. Step 4: Simplify right side
    20,686,545.90x = 285,317,692,930,622.88
  5. Step 5: Solve for x
    x = 285,317,692,930,622.88/20,686,545.90
  6. Step 6: Final answer
    x = 13,792,427.91

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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.