Home / 20,982,415.68-31,472,178.48-12,896,639.28

Finding the Fourth Proportional to 20,982,415.68, 31,472,178.48 and 12,896,639.28

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Solution

The fourth proportional to 20,982,415.68, 31,472,178.48 and 12,896,639.28 is: 19,344,070.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982,415.68 : 31,472,178.48 = 12,896,639.28 : x
  2. Step 2: Convert to fraction form
    20,982,415.68/31,472,178.48 = 12,896,639.28/x
  3. Step 3: Cross multiply
    20,982,415.68x = 31,472,178.48 × 12,896,639.28
  4. Step 4: Simplify right side
    20,982,415.68x = 405,885,333,212,338.69
  5. Step 5: Solve for x
    x = 405,885,333,212,338.69/20,982,415.68
  6. Step 6: Final answer
    x = 19,344,070.74

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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.