Home / 28,275.20-38,993.72-18,185.84

Finding the Fourth Proportional to 28,275.20, 38,993.72 and 18,185.84

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Solution

The fourth proportional to 28,275.20, 38,993.72 and 18,185.84 is: 25,079.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,275.20 : 38,993.72 = 18,185.84 : x
  2. Step 2: Convert to fraction form
    28,275.20/38,993.72 = 18,185.84/x
  3. Step 3: Cross multiply
    28,275.20x = 38,993.72 × 18,185.84
  4. Step 4: Simplify right side
    28,275.20x = 709,133,552.92
  5. Step 5: Solve for x
    x = 709,133,552.92/28,275.20
  6. Step 6: Final answer
    x = 25,079.70

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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.