Home / 15,912,196,349.71-21,958,852,739.80-8,678,261,315.79

Finding the Fourth Proportional to 15,912,196,349.71, 21,958,852,739.80 and 8,678,261,315.79

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Solution

The fourth proportional to 15,912,196,349.71, 21,958,852,739.80 and 8,678,261,315.79 is: 11,976,012,492.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,912,196,349.71 : 21,958,852,739.80 = 8,678,261,315.79 : x
  2. Step 2: Convert to fraction form
    15,912,196,349.71/21,958,852,739.80 = 8,678,261,315.79/x
  3. Step 3: Cross multiply
    15,912,196,349.71x = 21,958,852,739.80 × 8,678,261,315.79
  4. Step 4: Simplify right side
    15,912,196,349.71x = 190,564,662,270,970,331,136
  5. Step 5: Solve for x
    x = 190,564,662,270,970,331,136/15,912,196,349.71
  6. Step 6: Final answer
    x = 11,976,012,492.73

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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.