Home / 28,212.25-38,933.11-15,637

Finding the Fourth Proportional to 28,212.25, 38,933.11 and 15,637

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Solution

The fourth proportional to 28,212.25, 38,933.11 and 15,637 is: 21,579.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,212.25 : 38,933.11 = 15,637 : x
  2. Step 2: Convert to fraction form
    28,212.25/38,933.11 = 15,637/x
  3. Step 3: Cross multiply
    28,212.25x = 38,933.11 × 15,637
  4. Step 4: Simplify right side
    28,212.25x = 608,797,041.07
  5. Step 5: Solve for x
    x = 608,797,041.07/28,212.25
  6. Step 6: Final answer
    x = 21,579.17

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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.