Home / 20,736.46-31,104.72-5,154.09

Finding the Fourth Proportional to 20,736.46, 31,104.72 and 5,154.09

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Solution

The fourth proportional to 20,736.46, 31,104.72 and 5,154.09 is: 7,731.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.46 : 31,104.72 = 5,154.09 : x
  2. Step 2: Convert to fraction form
    20,736.46/31,104.72 = 5,154.09/x
  3. Step 3: Cross multiply
    20,736.46x = 31,104.72 × 5,154.09
  4. Step 4: Simplify right side
    20,736.46x = 160,316,482.65
  5. Step 5: Solve for x
    x = 160,316,482.65/20,736.46
  6. Step 6: Final answer
    x = 7,731.14

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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.