Home / 20,816,121.78-31,242,118.83-14,430,858.18

Finding the Fourth Proportional to 20,816,121.78, 31,242,118.83 and 14,430,858.18

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Solution

The fourth proportional to 20,816,121.78, 31,242,118.83 and 14,430,858.18 is: 21,658,721.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,816,121.78 : 31,242,118.83 = 14,430,858.18 : x
  2. Step 2: Convert to fraction form
    20,816,121.78/31,242,118.83 = 14,430,858.18/x
  3. Step 3: Cross multiply
    20,816,121.78x = 31,242,118.83 × 14,430,858.18
  4. Step 4: Simplify right side
    20,816,121.78x = 450,850,586,078,437.50
  5. Step 5: Solve for x
    x = 450,850,586,078,437.50/20,816,121.78
  6. Step 6: Final answer
    x = 21,658,721.58

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1.5x scale

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.