Home / 21,259.60-29,338.38-11,828.76

Finding the Fourth Proportional to 21,259.60, 29,338.38 and 11,828.76

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Solution

The fourth proportional to 21,259.60, 29,338.38 and 11,828.76 is: 16,323.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,259.60 : 29,338.38 = 11,828.76 : x
  2. Step 2: Convert to fraction form
    21,259.60/29,338.38 = 11,828.76/x
  3. Step 3: Cross multiply
    21,259.60x = 29,338.38 × 11,828.76
  4. Step 4: Simplify right side
    21,259.60x = 347,036,655.81
  5. Step 5: Solve for x
    x = 347,036,655.81/21,259.60
  6. Step 6: Final answer
    x = 16,323.76

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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.