Home / 19,668.95-27,177.68-15,722.63

Finding the Fourth Proportional to 19,668.95, 27,177.68 and 15,722.63

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Solution

The fourth proportional to 19,668.95, 27,177.68 and 15,722.63 is: 21,724.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,668.95 : 27,177.68 = 15,722.63 : x
  2. Step 2: Convert to fraction form
    19,668.95/27,177.68 = 15,722.63/x
  3. Step 3: Cross multiply
    19,668.95x = 27,177.68 × 15,722.63
  4. Step 4: Simplify right side
    19,668.95x = 427,304,606.90
  5. Step 5: Solve for x
    x = 427,304,606.90/19,668.95
  6. Step 6: Final answer
    x = 21,724.83

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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.