Home / 28,445.10-39,257.73-17,120.49

Finding the Fourth Proportional to 28,445.10, 39,257.73 and 17,120.49

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Solution

The fourth proportional to 28,445.10, 39,257.73 and 17,120.49 is: 23,628.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,445.10 : 39,257.73 = 17,120.49 : x
  2. Step 2: Convert to fraction form
    28,445.10/39,257.73 = 17,120.49/x
  3. Step 3: Cross multiply
    28,445.10x = 39,257.73 × 17,120.49
  4. Step 4: Simplify right side
    28,445.10x = 672,111,573.89
  5. Step 5: Solve for x
    x = 672,111,573.89/28,445.10
  6. Step 6: Final answer
    x = 23,628.38

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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.