Home / 12,604,875.60-18,907,313.40-7,821,906.60

Finding the Fourth Proportional to 12,604,875.60, 18,907,313.40 and 7,821,906.60

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Solution

The fourth proportional to 12,604,875.60, 18,907,313.40 and 7,821,906.60 is: 11,732,859.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,604,875.60 : 18,907,313.40 = 7,821,906.60 : x
  2. Step 2: Convert to fraction form
    12,604,875.60/18,907,313.40 = 7,821,906.60/x
  3. Step 3: Cross multiply
    12,604,875.60x = 18,907,313.40 × 7,821,906.60
  4. Step 4: Simplify right side
    12,604,875.60x = 147,891,239,471,728.41
  5. Step 5: Solve for x
    x = 147,891,239,471,728.41/12,604,875.60
  6. Step 6: Final answer
    x = 11,732,859.90

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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.