Home / 20,986.06-31,510.12-14,009.54

Finding the Fourth Proportional to 20,986.06, 31,510.12 and 14,009.54

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Solution

The fourth proportional to 20,986.06, 31,510.12 and 14,009.54 is: 21,035.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,986.06 : 31,510.12 = 14,009.54 : x
  2. Step 2: Convert to fraction form
    20,986.06/31,510.12 = 14,009.54/x
  3. Step 3: Cross multiply
    20,986.06x = 31,510.12 × 14,009.54
  4. Step 4: Simplify right side
    20,986.06x = 441,442,286.54
  5. Step 5: Solve for x
    x = 441,442,286.54/20,986.06
  6. Step 6: Final answer
    x = 21,035.02

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1.5x scale

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.