Home / 20,556,898,686.86-28,377,815,549.31-12,947,128,245.59

Finding the Fourth Proportional to 20,556,898,686.86, 28,377,815,549.31 and 12,947,128,245.59

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Solution

The fourth proportional to 20,556,898,686.86, 28,377,815,549.31 and 12,947,128,245.59 is: 17,872,891,375.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556,898,686.86 : 28,377,815,549.31 = 12,947,128,245.59 : x
  2. Step 2: Convert to fraction form
    20,556,898,686.86/28,377,815,549.31 = 12,947,128,245.59/x
  3. Step 3: Cross multiply
    20,556,898,686.86x = 28,377,815,549.31 × 12,947,128,245.59
  4. Step 4: Simplify right side
    20,556,898,686.86x = 367,411,217,246,472,699,904
  5. Step 5: Solve for x
    x = 367,411,217,246,472,699,904/20,556,898,686.86
  6. Step 6: Final answer
    x = 17,872,891,375.46

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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.