Home / 27,771.06-38,309.76-18,815.52

Finding the Fourth Proportional to 27,771.06, 38,309.76 and 18,815.52

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Solution

The fourth proportional to 27,771.06, 38,309.76 and 18,815.52 is: 25,955.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,771.06 : 38,309.76 = 18,815.52 : x
  2. Step 2: Convert to fraction form
    27,771.06/38,309.76 = 18,815.52/x
  3. Step 3: Cross multiply
    27,771.06x = 38,309.76 × 18,815.52
  4. Step 4: Simplify right side
    27,771.06x = 720,818,055.48
  5. Step 5: Solve for x
    x = 720,818,055.48/27,771.06
  6. Step 6: Final answer
    x = 25,955.73

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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.