Home / 20,611,961,808.84-28,445,725,101.96-15,522,346,201.32

Finding the Fourth Proportional to 20,611,961,808.84, 28,445,725,101.96 and 15,522,346,201.32

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Solution

The fourth proportional to 20,611,961,808.84, 28,445,725,101.96 and 15,522,346,201.32 is: 21,421,754,856.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611,961,808.84 : 28,445,725,101.96 = 15,522,346,201.32 : x
  2. Step 2: Convert to fraction form
    20,611,961,808.84/28,445,725,101.96 = 15,522,346,201.32/x
  3. Step 3: Cross multiply
    20,611,961,808.84x = 28,445,725,101.96 × 15,522,346,201.32
  4. Step 4: Simplify right side
    20,611,961,808.84x = 441,544,392,980,201,734,144
  5. Step 5: Solve for x
    x = 441,544,392,980,201,734,144/20,611,961,808.84
  6. Step 6: Final answer
    x = 21,421,754,856.49

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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.