Home / 27,985.84-38,620.40-15,238.82

Finding the Fourth Proportional to 27,985.84, 38,620.40 and 15,238.82

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Solution

The fourth proportional to 27,985.84, 38,620.40 and 15,238.82 is: 21,029.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,985.84 : 38,620.40 = 15,238.82 : x
  2. Step 2: Convert to fraction form
    27,985.84/38,620.40 = 15,238.82/x
  3. Step 3: Cross multiply
    27,985.84x = 38,620.40 × 15,238.82
  4. Step 4: Simplify right side
    27,985.84x = 588,529,344.28
  5. Step 5: Solve for x
    x = 588,529,344.28/27,985.84
  6. Step 6: Final answer
    x = 21,029.54

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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.