Home / 28,231.88-38,960.06-15,656.63

Finding the Fourth Proportional to 28,231.88, 38,960.06 and 15,656.63

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Solution

The fourth proportional to 28,231.88, 38,960.06 and 15,656.63 is: 21,606.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,231.88 : 38,960.06 = 15,656.63 : x
  2. Step 2: Convert to fraction form
    28,231.88/38,960.06 = 15,656.63/x
  3. Step 3: Cross multiply
    28,231.88x = 38,960.06 × 15,656.63
  4. Step 4: Simplify right side
    28,231.88x = 609,982,971.11
  5. Step 5: Solve for x
    x = 609,982,971.11/28,231.88
  6. Step 6: Final answer
    x = 21,606.18

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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.