Home / 13,438,801.80-20,158,202.70-4,919,999.40

Finding the Fourth Proportional to 13,438,801.80, 20,158,202.70 and 4,919,999.40

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Solution

The fourth proportional to 13,438,801.80, 20,158,202.70 and 4,919,999.40 is: 7,379,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438,801.80 : 20,158,202.70 = 4,919,999.40 : x
  2. Step 2: Convert to fraction form
    13,438,801.80/20,158,202.70 = 4,919,999.40/x
  3. Step 3: Cross multiply
    13,438,801.80x = 20,158,202.70 × 4,919,999.40
  4. Step 4: Simplify right side
    13,438,801.80x = 99,178,345,189,078.39
  5. Step 5: Solve for x
    x = 99,178,345,189,078.39/13,438,801.80
  6. Step 6: Final answer
    x = 7,379,999.10

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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.