Home / 28,196.43-38,910.63-15,449.51

Finding the Fourth Proportional to 28,196.43, 38,910.63 and 15,449.51

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Solution

The fourth proportional to 28,196.43, 38,910.63 and 15,449.51 is: 21,320.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,196.43 : 38,910.63 = 15,449.51 : x
  2. Step 2: Convert to fraction form
    28,196.43/38,910.63 = 15,449.51/x
  3. Step 3: Cross multiply
    28,196.43x = 38,910.63 × 15,449.51
  4. Step 4: Simplify right side
    28,196.43x = 601,149,972.74
  5. Step 5: Solve for x
    x = 601,149,972.74/28,196.43
  6. Step 6: Final answer
    x = 21,320.07

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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.