Home / 20,360.31-30,521.31-10,986.28

Finding the Fourth Proportional to 20,360.31, 30,521.31 and 10,986.28

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Solution

The fourth proportional to 20,360.31, 30,521.31 and 10,986.28 is: 16,469.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,360.31 : 30,521.31 = 10,986.28 : x
  2. Step 2: Convert to fraction form
    20,360.31/30,521.31 = 10,986.28/x
  3. Step 3: Cross multiply
    20,360.31x = 30,521.31 × 10,986.28
  4. Step 4: Simplify right side
    20,360.31x = 335,315,657.63
  5. Step 5: Solve for x
    x = 335,315,657.63/20,360.31
  6. Step 6: Final answer
    x = 16,469.08

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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.