Home / 21,720,012.59-29,974,134.86-11,930,661.81

Finding the Fourth Proportional to 21,720,012.59, 29,974,134.86 and 11,930,661.81

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Solution

The fourth proportional to 21,720,012.59, 29,974,134.86 and 11,930,661.81 is: 16,464,597.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,720,012.59 : 29,974,134.86 = 11,930,661.81 : x
  2. Step 2: Convert to fraction form
    21,720,012.59/29,974,134.86 = 11,930,661.81/x
  3. Step 3: Cross multiply
    21,720,012.59x = 29,974,134.86 × 11,930,661.81
  4. Step 4: Simplify right side
    21,720,012.59x = 357,611,266,061,991.69
  5. Step 5: Solve for x
    x = 357,611,266,061,991.69/21,720,012.59
  6. Step 6: Final answer
    x = 16,464,597.55

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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.