Home / 20,975.45-31,463.46-5,393.07

Finding the Fourth Proportional to 20,975.45, 31,463.46 and 5,393.07

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Solution

The fourth proportional to 20,975.45, 31,463.46 and 5,393.07 is: 8,089.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,975.45 : 31,463.46 = 5,393.07 : x
  2. Step 2: Convert to fraction form
    20,975.45/31,463.46 = 5,393.07/x
  3. Step 3: Cross multiply
    20,975.45x = 31,463.46 × 5,393.07
  4. Step 4: Simplify right side
    20,975.45x = 169,684,642.22
  5. Step 5: Solve for x
    x = 169,684,642.22/20,975.45
  6. Step 6: Final answer
    x = 8,089.68

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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.