Home / 22,121.47-30,527.67-13,169.28

Finding the Fourth Proportional to 22,121.47, 30,527.67 and 13,169.28

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Solution

The fourth proportional to 22,121.47, 30,527.67 and 13,169.28 is: 18,173.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,121.47 : 30,527.67 = 13,169.28 : x
  2. Step 2: Convert to fraction form
    22,121.47/30,527.67 = 13,169.28/x
  3. Step 3: Cross multiply
    22,121.47x = 30,527.67 × 13,169.28
  4. Step 4: Simplify right side
    22,121.47x = 402,027,510.30
  5. Step 5: Solve for x
    x = 402,027,510.30/22,121.47
  6. Step 6: Final answer
    x = 18,173.63

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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.