Home / 18,774,332.21-28,173,344.57-7,991,615.45

Finding the Fourth Proportional to 18,774,332.21, 28,173,344.57 and 7,991,615.45

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Solution

The fourth proportional to 18,774,332.21, 28,173,344.57 and 7,991,615.45 is: 11,992,465.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774,332.21 : 28,173,344.57 = 7,991,615.45 : x
  2. Step 2: Convert to fraction form
    18,774,332.21/28,173,344.57 = 7,991,615.45/x
  3. Step 3: Cross multiply
    18,774,332.21x = 28,173,344.57 × 7,991,615.45
  4. Step 4: Simplify right side
    18,774,332.21x = 225,150,535,562,960.81
  5. Step 5: Solve for x
    x = 225,150,535,562,960.81/18,774,332.21
  6. Step 6: Final answer
    x = 11,992,465.73

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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.