Home / 21,197,901.80-31,796,852.70-19,922,443.40

Finding the Fourth Proportional to 21,197,901.80, 31,796,852.70 and 19,922,443.40

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Solution

The fourth proportional to 21,197,901.80, 31,796,852.70 and 19,922,443.40 is: 29,883,665.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,197,901.80 : 31,796,852.70 = 19,922,443.40 : x
  2. Step 2: Convert to fraction form
    21,197,901.80/31,796,852.70 = 19,922,443.40/x
  3. Step 3: Cross multiply
    21,197,901.80x = 31,796,852.70 × 19,922,443.40
  4. Step 4: Simplify right side
    21,197,901.80x = 633,470,998,213,887.12
  5. Step 5: Solve for x
    x = 633,470,998,213,887.12/21,197,901.80
  6. Step 6: Final answer
    x = 29,883,665.10

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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.