Home / 21,660,089.31-29,890,965.57-11,870,896.88

Finding the Fourth Proportional to 21,660,089.31, 29,890,965.57 and 11,870,896.88

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Solution

The fourth proportional to 21,660,089.31, 29,890,965.57 and 11,870,896.88 is: 16,381,860.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,660,089.31 : 29,890,965.57 = 11,870,896.88 : x
  2. Step 2: Convert to fraction form
    21,660,089.31/29,890,965.57 = 11,870,896.88/x
  3. Step 3: Cross multiply
    21,660,089.31x = 29,890,965.57 × 11,870,896.88
  4. Step 4: Simplify right side
    21,660,089.31x = 354,832,569,955,312
  5. Step 5: Solve for x
    x = 354,832,569,955,312/21,660,089.31
  6. Step 6: Final answer
    x = 16,381,860.89

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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.