Home / 28,117.96-38,802.54-15,542.44

Finding the Fourth Proportional to 28,117.96, 38,802.54 and 15,542.44

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Solution

The fourth proportional to 28,117.96, 38,802.54 and 15,542.44 is: 21,448.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.96 : 38,802.54 = 15,542.44 : x
  2. Step 2: Convert to fraction form
    28,117.96/38,802.54 = 15,542.44/x
  3. Step 3: Cross multiply
    28,117.96x = 38,802.54 × 15,542.44
  4. Step 4: Simplify right side
    28,117.96x = 603,086,149.80
  5. Step 5: Solve for x
    x = 603,086,149.80/28,117.96
  6. Step 6: Final answer
    x = 21,448.43

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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.