Home / 18,636.91-25,728.47-14,378.43

Finding the Fourth Proportional to 18,636.91, 25,728.47 and 14,378.43

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Solution

The fourth proportional to 18,636.91, 25,728.47 and 14,378.43 is: 19,849.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636.91 : 25,728.47 = 14,378.43 : x
  2. Step 2: Convert to fraction form
    18,636.91/25,728.47 = 14,378.43/x
  3. Step 3: Cross multiply
    18,636.91x = 25,728.47 × 14,378.43
  4. Step 4: Simplify right side
    18,636.91x = 369,935,004.90
  5. Step 5: Solve for x
    x = 369,935,004.90/18,636.91
  6. Step 6: Final answer
    x = 19,849.59

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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.