Home / 28,196.84-38,911.66-15,450.82

Finding the Fourth Proportional to 28,196.84, 38,911.66 and 15,450.82

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Solution

The fourth proportional to 28,196.84, 38,911.66 and 15,450.82 is: 21,322.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,196.84 : 38,911.66 = 15,450.82 : x
  2. Step 2: Convert to fraction form
    28,196.84/38,911.66 = 15,450.82/x
  3. Step 3: Cross multiply
    28,196.84x = 38,911.66 × 15,450.82
  4. Step 4: Simplify right side
    28,196.84x = 601,216,918.66
  5. Step 5: Solve for x
    x = 601,216,918.66/28,196.84
  6. Step 6: Final answer
    x = 21,322.14

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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.