Home / 18,686,930.40-28,035,644.40-9,102,621.60

Finding the Fourth Proportional to 18,686,930.40, 28,035,644.40 and 9,102,621.60

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Solution

The fourth proportional to 18,686,930.40, 28,035,644.40 and 9,102,621.60 is: 13,656,489.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686,930.40 : 28,035,644.40 = 9,102,621.60 : x
  2. Step 2: Convert to fraction form
    18,686,930.40/28,035,644.40 = 9,102,621.60/x
  3. Step 3: Cross multiply
    18,686,930.40x = 28,035,644.40 × 9,102,621.60
  4. Step 4: Simplify right side
    18,686,930.40x = 255,197,862,285,359.03
  5. Step 5: Solve for x
    x = 255,197,862,285,359.03/18,686,930.40
  6. Step 6: Final answer
    x = 13,656,489.15

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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.