Home / 18,821.28-25,970.64-12,107.52

Finding the Fourth Proportional to 18,821.28, 25,970.64 and 12,107.52

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Solution

The fourth proportional to 18,821.28, 25,970.64 and 12,107.52 is: 16,706.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.28 : 25,970.64 = 12,107.52 : x
  2. Step 2: Convert to fraction form
    18,821.28/25,970.64 = 12,107.52/x
  3. Step 3: Cross multiply
    18,821.28x = 25,970.64 × 12,107.52
  4. Step 4: Simplify right side
    18,821.28x = 314,440,043.21
  5. Step 5: Solve for x
    x = 314,440,043.21/18,821.28
  6. Step 6: Final answer
    x = 16,706.62

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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.