Home / 21,157,142,174.65-29,195,980,836.61-11,511,911,844.74

Finding the Fourth Proportional to 21,157,142,174.65, 29,195,980,836.61 and 11,511,911,844.74

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Solution

The fourth proportional to 21,157,142,174.65, 29,195,980,836.61 and 11,511,911,844.74 is: 15,885,962,047.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,157,142,174.65 : 29,195,980,836.61 = 11,511,911,844.74 : x
  2. Step 2: Convert to fraction form
    21,157,142,174.65/29,195,980,836.61 = 11,511,911,844.74/x
  3. Step 3: Cross multiply
    21,157,142,174.65x = 29,195,980,836.61 × 11,511,911,844.74
  4. Step 4: Simplify right side
    21,157,142,174.65x = 336,101,557,611,672,764,416
  5. Step 5: Solve for x
    x = 336,101,557,611,672,764,416/21,157,142,174.65
  6. Step 6: Final answer
    x = 15,885,962,047.10

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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.