Home / 20,556,898,718.06-28,377,815,592.48-12,947,128,276.80

Finding the Fourth Proportional to 20,556,898,718.06, 28,377,815,592.48 and 12,947,128,276.80

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Solution

The fourth proportional to 20,556,898,718.06, 28,377,815,592.48 and 12,947,128,276.80 is: 17,872,891,418.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556,898,718.06 : 28,377,815,592.48 = 12,947,128,276.80 : x
  2. Step 2: Convert to fraction form
    20,556,898,718.06/28,377,815,592.48 = 12,947,128,276.80/x
  3. Step 3: Cross multiply
    20,556,898,718.06x = 28,377,815,592.48 × 12,947,128,276.80
  4. Step 4: Simplify right side
    20,556,898,718.06x = 367,411,218,691,213,754,368
  5. Step 5: Solve for x
    x = 367,411,218,691,213,754,368/20,556,898,718.06
  6. Step 6: Final answer
    x = 17,872,891,418.61

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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.