Home / 21,268.95-31,871.09-10,160.34

Finding the Fourth Proportional to 21,268.95, 31,871.09 and 10,160.34

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Solution

The fourth proportional to 21,268.95, 31,871.09 and 10,160.34 is: 15,225.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.95 : 31,871.09 = 10,160.34 : x
  2. Step 2: Convert to fraction form
    21,268.95/31,871.09 = 10,160.34/x
  3. Step 3: Cross multiply
    21,268.95x = 31,871.09 × 10,160.34
  4. Step 4: Simplify right side
    21,268.95x = 323,821,059.77
  5. Step 5: Solve for x
    x = 323,821,059.77/21,268.95
  6. Step 6: Final answer
    x = 15,225.06

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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.