Home / 18,956.34-28,400.46-11,160.90

Finding the Fourth Proportional to 18,956.34, 28,400.46 and 11,160.90

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Solution

The fourth proportional to 18,956.34, 28,400.46 and 11,160.90 is: 16,721.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,956.34 : 28,400.46 = 11,160.90 : x
  2. Step 2: Convert to fraction form
    18,956.34/28,400.46 = 11,160.90/x
  3. Step 3: Cross multiply
    18,956.34x = 28,400.46 × 11,160.90
  4. Step 4: Simplify right side
    18,956.34x = 316,974,694.01
  5. Step 5: Solve for x
    x = 316,974,694.01/18,956.34
  6. Step 6: Final answer
    x = 16,721.30

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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.