Home / 21,219,256.82-31,765,444.41-12,996,006.62

Finding the Fourth Proportional to 21,219,256.82, 31,765,444.41 and 12,996,006.62

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Solution

The fourth proportional to 21,219,256.82, 31,765,444.41 and 12,996,006.62 is: 19,455,154.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219,256.82 : 31,765,444.41 = 12,996,006.62 : x
  2. Step 2: Convert to fraction form
    21,219,256.82/31,765,444.41 = 12,996,006.62/x
  3. Step 3: Cross multiply
    21,219,256.82x = 31,765,444.41 × 12,996,006.62
  4. Step 4: Simplify right side
    21,219,256.82x = 412,823,925,839,602
  5. Step 5: Solve for x
    x = 412,823,925,839,602/21,219,256.82
  6. Step 6: Final answer
    x = 19,455,154.78

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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.