Home / 13,985.14-20,959.26-7,409.56

Finding the Fourth Proportional to 13,985.14, 20,959.26 and 7,409.56

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Solution

The fourth proportional to 13,985.14, 20,959.26 and 7,409.56 is: 11,104.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.14 : 20,959.26 = 7,409.56 : x
  2. Step 2: Convert to fraction form
    13,985.14/20,959.26 = 7,409.56/x
  3. Step 3: Cross multiply
    13,985.14x = 20,959.26 × 7,409.56
  4. Step 4: Simplify right side
    13,985.14x = 155,298,894.53
  5. Step 5: Solve for x
    x = 155,298,894.53/13,985.14
  6. Step 6: Final answer
    x = 11,104.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.