Home / 27,990.29-38,634.54-18,437.15

Finding the Fourth Proportional to 27,990.29, 38,634.54 and 18,437.15

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Solution

The fourth proportional to 27,990.29, 38,634.54 and 18,437.15 is: 25,448.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,990.29 : 38,634.54 = 18,437.15 : x
  2. Step 2: Convert to fraction form
    27,990.29/38,634.54 = 18,437.15/x
  3. Step 3: Cross multiply
    27,990.29x = 38,634.54 × 18,437.15
  4. Step 4: Simplify right side
    27,990.29x = 712,310,615.99
  5. Step 5: Solve for x
    x = 712,310,615.99/27,990.29
  6. Step 6: Final answer
    x = 25,448.49

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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.