Home / 28,382.35-39,176.73-18,311.08

Finding the Fourth Proportional to 28,382.35, 39,176.73 and 18,311.08

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Solution

The fourth proportional to 28,382.35, 39,176.73 and 18,311.08 is: 25,275.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,382.35 : 39,176.73 = 18,311.08 : x
  2. Step 2: Convert to fraction form
    28,382.35/39,176.73 = 18,311.08/x
  3. Step 3: Cross multiply
    28,382.35x = 39,176.73 × 18,311.08
  4. Step 4: Simplify right side
    28,382.35x = 717,368,237.17
  5. Step 5: Solve for x
    x = 717,368,237.17/28,382.35
  6. Step 6: Final answer
    x = 25,275.15

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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.