Home / 21,187.56-29,238.81-11,627.50

Finding the Fourth Proportional to 21,187.56, 29,238.81 and 11,627.50

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Solution

The fourth proportional to 21,187.56, 29,238.81 and 11,627.50 is: 16,045.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.56 : 29,238.81 = 11,627.50 : x
  2. Step 2: Convert to fraction form
    21,187.56/29,238.81 = 11,627.50/x
  3. Step 3: Cross multiply
    21,187.56x = 29,238.81 × 11,627.50
  4. Step 4: Simplify right side
    21,187.56x = 339,974,263.28
  5. Step 5: Solve for x
    x = 339,974,263.28/21,187.56
  6. Step 6: Final answer
    x = 16,045.94

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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.