Home / 28,310.72-39,079.68-18,875.84

Finding the Fourth Proportional to 28,310.72, 39,079.68 and 18,875.84

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Solution

The fourth proportional to 28,310.72, 39,079.68 and 18,875.84 is: 26,055.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,310.72 : 39,079.68 = 18,875.84 : x
  2. Step 2: Convert to fraction form
    28,310.72/39,079.68 = 18,875.84/x
  3. Step 3: Cross multiply
    28,310.72x = 39,079.68 × 18,875.84
  4. Step 4: Simplify right side
    28,310.72x = 737,661,786.93
  5. Step 5: Solve for x
    x = 737,661,786.93/28,310.72
  6. Step 6: Final answer
    x = 26,055.92

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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.