Home / 28,070.82-38,720.70-16,732.78

Finding the Fourth Proportional to 28,070.82, 38,720.70 and 16,732.78

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Solution

The fourth proportional to 28,070.82, 38,720.70 and 16,732.78 is: 23,081.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,070.82 : 38,720.70 = 16,732.78 : x
  2. Step 2: Convert to fraction form
    28,070.82/38,720.70 = 16,732.78/x
  3. Step 3: Cross multiply
    28,070.82x = 38,720.70 × 16,732.78
  4. Step 4: Simplify right side
    28,070.82x = 647,904,857.74
  5. Step 5: Solve for x
    x = 647,904,857.74/28,070.82
  6. Step 6: Final answer
    x = 23,081.08

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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.