Home / 21,138,043,738.42-31,719,429,582.90-7,882,459,678.90

Finding the Fourth Proportional to 21,138,043,738.42, 31,719,429,582.90 and 7,882,459,678.90

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Solution

The fourth proportional to 21,138,043,738.42, 31,719,429,582.90 and 7,882,459,678.90 is: 11,828,300,093.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,138,043,738.42 : 31,719,429,582.90 = 7,882,459,678.90 : x
  2. Step 2: Convert to fraction form
    21,138,043,738.42/31,719,429,582.90 = 7,882,459,678.90/x
  3. Step 3: Cross multiply
    21,138,043,738.42x = 31,719,429,582.90 × 7,882,459,678.90
  4. Step 4: Simplify right side
    21,138,043,738.42x = 250,027,124,724,917,108,736
  5. Step 5: Solve for x
    x = 250,027,124,724,917,108,736/21,138,043,738.42
  6. Step 6: Final answer
    x = 11,828,300,093.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.