Home / 22,131.20-30,527.10-13,172.02

Finding the Fourth Proportional to 22,131.20, 30,527.10 and 13,172.02

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Solution

The fourth proportional to 22,131.20, 30,527.10 and 13,172.02 is: 18,169.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,131.20 : 30,527.10 = 13,172.02 : x
  2. Step 2: Convert to fraction form
    22,131.20/30,527.10 = 13,172.02/x
  3. Step 3: Cross multiply
    22,131.20x = 30,527.10 × 13,172.02
  4. Step 4: Simplify right side
    22,131.20x = 402,103,571.74
  5. Step 5: Solve for x
    x = 402,103,571.74/22,131.20
  6. Step 6: Final answer
    x = 18,169.08

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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.