Home / 20,831.53-31,210.84-17,343.94

Finding the Fourth Proportional to 20,831.53, 31,210.84 and 17,343.94

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Solution

The fourth proportional to 20,831.53, 31,210.84 and 17,343.94 is: 25,985.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831.53 : 31,210.84 = 17,343.94 : x
  2. Step 2: Convert to fraction form
    20,831.53/31,210.84 = 17,343.94/x
  3. Step 3: Cross multiply
    20,831.53x = 31,210.84 × 17,343.94
  4. Step 4: Simplify right side
    20,831.53x = 541,318,849.59
  5. Step 5: Solve for x
    x = 541,318,849.59/20,831.53
  6. Step 6: Final answer
    x = 25,985.56

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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.