Home / 12,763,993.60-19,145,990.40-9,180,812.80

Finding the Fourth Proportional to 12,763,993.60, 19,145,990.40 and 9,180,812.80

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Solution

The fourth proportional to 12,763,993.60, 19,145,990.40 and 9,180,812.80 is: 13,771,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,763,993.60 : 19,145,990.40 = 9,180,812.80 : x
  2. Step 2: Convert to fraction form
    12,763,993.60/19,145,990.40 = 9,180,812.80/x
  3. Step 3: Cross multiply
    12,763,993.60x = 19,145,990.40 × 9,180,812.80
  4. Step 4: Simplify right side
    12,763,993.60x = 175,775,753,732,997.12
  5. Step 5: Solve for x
    x = 175,775,753,732,997.12/12,763,993.60
  6. Step 6: Final answer
    x = 13,771,219.20

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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.