Home / 20,775,548.52-31,153,514.52-12,142,125.72

Finding the Fourth Proportional to 20,775,548.52, 31,153,514.52 and 12,142,125.72

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Solution

The fourth proportional to 20,775,548.52, 31,153,514.52 and 12,142,125.72 is: 18,207,456.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775,548.52 : 31,153,514.52 = 12,142,125.72 : x
  2. Step 2: Convert to fraction form
    20,775,548.52/31,153,514.52 = 12,142,125.72/x
  3. Step 3: Cross multiply
    20,775,548.52x = 31,153,514.52 × 12,142,125.72
  4. Step 4: Simplify right side
    20,775,548.52x = 378,269,889,921,685.50
  5. Step 5: Solve for x
    x = 378,269,889,921,685.50/20,775,548.52
  6. Step 6: Final answer
    x = 18,207,456.21

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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.