Home / 28,290.24-39,042.24-15,714.96

Finding the Fourth Proportional to 28,290.24, 39,042.24 and 15,714.96

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Solution

The fourth proportional to 28,290.24, 39,042.24 and 15,714.96 is: 21,687.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.24 : 39,042.24 = 15,714.96 : x
  2. Step 2: Convert to fraction form
    28,290.24/39,042.24 = 15,714.96/x
  3. Step 3: Cross multiply
    28,290.24x = 39,042.24 × 15,714.96
  4. Step 4: Simplify right side
    28,290.24x = 613,547,239.91
  5. Step 5: Solve for x
    x = 613,547,239.91/28,290.24
  6. Step 6: Final answer
    x = 21,687.59

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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.