Home / 18,359.11-25,313.39-15,521.48

Finding the Fourth Proportional to 18,359.11, 25,313.39 and 15,521.48

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Solution

The fourth proportional to 18,359.11, 25,313.39 and 15,521.48 is: 21,400.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,359.11 : 25,313.39 = 15,521.48 : x
  2. Step 2: Convert to fraction form
    18,359.11/25,313.39 = 15,521.48/x
  3. Step 3: Cross multiply
    18,359.11x = 25,313.39 × 15,521.48
  4. Step 4: Simplify right side
    18,359.11x = 392,901,276.62
  5. Step 5: Solve for x
    x = 392,901,276.62/18,359.11
  6. Step 6: Final answer
    x = 21,400.89

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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.