Home / 27,996.86-38,635.66-15,421.61

Finding the Fourth Proportional to 27,996.86, 38,635.66 and 15,421.61

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Solution

The fourth proportional to 27,996.86, 38,635.66 and 15,421.61 is: 21,281.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,996.86 : 38,635.66 = 15,421.61 : x
  2. Step 2: Convert to fraction form
    27,996.86/38,635.66 = 15,421.61/x
  3. Step 3: Cross multiply
    27,996.86x = 38,635.66 × 15,421.61
  4. Step 4: Simplify right side
    27,996.86x = 595,823,935.63
  5. Step 5: Solve for x
    x = 595,823,935.63/27,996.86
  6. Step 6: Final answer
    x = 21,281.82

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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.