Home / 20,975.76-31,462.56-5,394.24

Finding the Fourth Proportional to 20,975.76, 31,462.56 and 5,394.24

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Solution

The fourth proportional to 20,975.76, 31,462.56 and 5,394.24 is: 8,091.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,975.76 : 31,462.56 = 5,394.24 : x
  2. Step 2: Convert to fraction form
    20,975.76/31,462.56 = 5,394.24/x
  3. Step 3: Cross multiply
    20,975.76x = 31,462.56 × 5,394.24
  4. Step 4: Simplify right side
    20,975.76x = 169,716,599.65
  5. Step 5: Solve for x
    x = 169,716,599.65/20,975.76
  6. Step 6: Final answer
    x = 8,091.08

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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.