Home / 20,923.62-31,384.53-5,340.90

Finding the Fourth Proportional to 20,923.62, 31,384.53 and 5,340.90

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Solution

The fourth proportional to 20,923.62, 31,384.53 and 5,340.90 is: 8,011.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.62 : 31,384.53 = 5,340.90 : x
  2. Step 2: Convert to fraction form
    20,923.62/31,384.53 = 5,340.90/x
  3. Step 3: Cross multiply
    20,923.62x = 31,384.53 × 5,340.90
  4. Step 4: Simplify right side
    20,923.62x = 167,621,636.28
  5. Step 5: Solve for x
    x = 167,621,636.28/20,923.62
  6. Step 6: Final answer
    x = 8,011.12

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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.