Home / 21,142.46-31,711.26-7,101.92

Finding the Fourth Proportional to 21,142.46, 31,711.26 and 7,101.92

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Solution

The fourth proportional to 21,142.46, 31,711.26 and 7,101.92 is: 10,652.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,142.46 : 31,711.26 = 7,101.92 : x
  2. Step 2: Convert to fraction form
    21,142.46/31,711.26 = 7,101.92/x
  3. Step 3: Cross multiply
    21,142.46x = 31,711.26 × 7,101.92
  4. Step 4: Simplify right side
    21,142.46x = 225,210,831.62
  5. Step 5: Solve for x
    x = 225,210,831.62/21,142.46
  6. Step 6: Final answer
    x = 10,652.06

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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.