Home / 27,867.61-38,457.25-15,120.79

Finding the Fourth Proportional to 27,867.61, 38,457.25 and 15,120.79

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Solution

The fourth proportional to 27,867.61, 38,457.25 and 15,120.79 is: 20,866.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,867.61 : 38,457.25 = 15,120.79 : x
  2. Step 2: Convert to fraction form
    27,867.61/38,457.25 = 15,120.79/x
  3. Step 3: Cross multiply
    27,867.61x = 38,457.25 × 15,120.79
  4. Step 4: Simplify right side
    27,867.61x = 581,504,001.23
  5. Step 5: Solve for x
    x = 581,504,001.23/27,867.61
  6. Step 6: Final answer
    x = 20,866.66

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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.