Home / 28,179.36-38,888.64-15,606

Finding the Fourth Proportional to 28,179.36, 38,888.64 and 15,606

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Solution

The fourth proportional to 28,179.36, 38,888.64 and 15,606 is: 21,536.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.36 : 38,888.64 = 15,606 : x
  2. Step 2: Convert to fraction form
    28,179.36/38,888.64 = 15,606/x
  3. Step 3: Cross multiply
    28,179.36x = 38,888.64 × 15,606
  4. Step 4: Simplify right side
    28,179.36x = 606,896,115.84
  5. Step 5: Solve for x
    x = 606,896,115.84/28,179.36
  6. Step 6: Final answer
    x = 21,536.90

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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.