Home / 12,396,788.20-18,558,440.70-9,216,015.40

Finding the Fourth Proportional to 12,396,788.20, 18,558,440.70 and 9,216,015.40

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Solution

The fourth proportional to 12,396,788.20, 18,558,440.70 and 9,216,015.40 is: 13,796,708.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,396,788.20 : 18,558,440.70 = 9,216,015.40 : x
  2. Step 2: Convert to fraction form
    12,396,788.20/18,558,440.70 = 9,216,015.40/x
  3. Step 3: Cross multiply
    12,396,788.20x = 18,558,440.70 × 9,216,015.40
  4. Step 4: Simplify right side
    12,396,788.20x = 171,034,875,291,186.78
  5. Step 5: Solve for x
    x = 171,034,875,291,186.78/12,396,788.20
  6. Step 6: Final answer
    x = 13,796,708.67

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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.