Home / 28,814.60-39,764.64-15,895.36

Finding the Fourth Proportional to 28,814.60, 39,764.64 and 15,895.36

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Solution

The fourth proportional to 28,814.60, 39,764.64 and 15,895.36 is: 21,935.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,814.60 : 39,764.64 = 15,895.36 : x
  2. Step 2: Convert to fraction form
    28,814.60/39,764.64 = 15,895.36/x
  3. Step 3: Cross multiply
    28,814.60x = 39,764.64 × 15,895.36
  4. Step 4: Simplify right side
    28,814.60x = 632,073,268.07
  5. Step 5: Solve for x
    x = 632,073,268.07/28,814.60
  6. Step 6: Final answer
    x = 21,935.87

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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.