Home / 20,968.24-28,936.15-12,015.31

Finding the Fourth Proportional to 20,968.24, 28,936.15 and 12,015.31

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Solution

The fourth proportional to 20,968.24, 28,936.15 and 12,015.31 is: 16,581.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.24 : 28,936.15 = 12,015.31 : x
  2. Step 2: Convert to fraction form
    20,968.24/28,936.15 = 12,015.31/x
  3. Step 3: Cross multiply
    20,968.24x = 28,936.15 × 12,015.31
  4. Step 4: Simplify right side
    20,968.24x = 347,676,812.46
  5. Step 5: Solve for x
    x = 347,676,812.46/20,968.24
  6. Step 6: Final answer
    x = 16,581.12

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1.5x scale

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.