Home / 20,168.88-30,225.58-10,287.36

Finding the Fourth Proportional to 20,168.88, 30,225.58 and 10,287.36

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Solution

The fourth proportional to 20,168.88, 30,225.58 and 10,287.36 is: 15,416.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.88 : 30,225.58 = 10,287.36 : x
  2. Step 2: Convert to fraction form
    20,168.88/30,225.58 = 10,287.36/x
  3. Step 3: Cross multiply
    20,168.88x = 30,225.58 × 10,287.36
  4. Step 4: Simplify right side
    20,168.88x = 310,941,220.10
  5. Step 5: Solve for x
    x = 310,941,220.10/20,168.88
  6. Step 6: Final answer
    x = 15,416.88

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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.