Home / 13,286,005.68-18,336,042.20-8,132,772.72

Finding the Fourth Proportional to 13,286,005.68, 18,336,042.20 and 8,132,772.72

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Solution

The fourth proportional to 13,286,005.68, 18,336,042.20 and 8,132,772.72 is: 11,224,055.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286,005.68 : 18,336,042.20 = 8,132,772.72 : x
  2. Step 2: Convert to fraction form
    13,286,005.68/18,336,042.20 = 8,132,772.72/x
  3. Step 3: Cross multiply
    13,286,005.68x = 18,336,042.20 × 8,132,772.72
  4. Step 4: Simplify right side
    13,286,005.68x = 149,122,863,796,928.78
  5. Step 5: Solve for x
    x = 149,122,863,796,928.78/13,286,005.68
  6. Step 6: Final answer
    x = 11,224,055.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.