Home / 10,021.20-13,831.88-5,772.75

Finding the Fourth Proportional to 10,021.20, 13,831.88 and 5,772.75

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Solution

The fourth proportional to 10,021.20, 13,831.88 and 5,772.75 is: 7,967.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,021.20 : 13,831.88 = 5,772.75 : x
  2. Step 2: Convert to fraction form
    10,021.20/13,831.88 = 5,772.75/x
  3. Step 3: Cross multiply
    10,021.20x = 13,831.88 × 5,772.75
  4. Step 4: Simplify right side
    10,021.20x = 79,847,985.27
  5. Step 5: Solve for x
    x = 79,847,985.27/10,021.20
  6. Step 6: Final answer
    x = 7,967.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.