Home / 27,985.21-38,619.53-15,238.20

Finding the Fourth Proportional to 27,985.21, 38,619.53 and 15,238.20

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Solution

The fourth proportional to 27,985.21, 38,619.53 and 15,238.20 is: 21,028.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,985.21 : 38,619.53 = 15,238.20 : x
  2. Step 2: Convert to fraction form
    27,985.21/38,619.53 = 15,238.20/x
  3. Step 3: Cross multiply
    27,985.21x = 38,619.53 × 15,238.20
  4. Step 4: Simplify right side
    27,985.21x = 588,492,063.59
  5. Step 5: Solve for x
    x = 588,492,063.59/27,985.21
  6. Step 6: Final answer
    x = 21,028.68

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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.