Home / 28,225.28-38,933.12-18,288.64

Finding the Fourth Proportional to 28,225.28, 38,933.12 and 18,288.64

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Solution

The fourth proportional to 28,225.28, 38,933.12 and 18,288.64 is: 25,226.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,225.28 : 38,933.12 = 18,288.64 : x
  2. Step 2: Convert to fraction form
    28,225.28/38,933.12 = 18,288.64/x
  3. Step 3: Cross multiply
    28,225.28x = 38,933.12 × 18,288.64
  4. Step 4: Simplify right side
    28,225.28x = 712,033,815.76
  5. Step 5: Solve for x
    x = 712,033,815.76/28,225.28
  6. Step 6: Final answer
    x = 25,226.81

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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.