Home / 27,996.09-38,634.61-15,420.84

Finding the Fourth Proportional to 27,996.09, 38,634.61 and 15,420.84

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Solution

The fourth proportional to 27,996.09, 38,634.61 and 15,420.84 is: 21,280.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,996.09 : 38,634.61 = 15,420.84 : x
  2. Step 2: Convert to fraction form
    27,996.09/38,634.61 = 15,420.84/x
  3. Step 3: Cross multiply
    27,996.09x = 38,634.61 × 15,420.84
  4. Step 4: Simplify right side
    27,996.09x = 595,778,303.43
  5. Step 5: Solve for x
    x = 595,778,303.43/27,996.09
  6. Step 6: Final answer
    x = 21,280.77

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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.