Home / 27,985.15-38,618.53-15,238.13

Finding the Fourth Proportional to 27,985.15, 38,618.53 and 15,238.13

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Solution

The fourth proportional to 27,985.15, 38,618.53 and 15,238.13 is: 21,028.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,985.15 : 38,618.53 = 15,238.13 : x
  2. Step 2: Convert to fraction form
    27,985.15/38,618.53 = 15,238.13/x
  3. Step 3: Cross multiply
    27,985.15x = 38,618.53 × 15,238.13
  4. Step 4: Simplify right side
    27,985.15x = 588,473,992.22
  5. Step 5: Solve for x
    x = 588,473,992.22/27,985.15
  6. Step 6: Final answer
    x = 21,028.08

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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.