Home / 18,309.99-25,288.55-12,331.29

Finding the Fourth Proportional to 18,309.99, 25,288.55 and 12,331.29

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Solution

The fourth proportional to 18,309.99, 25,288.55 and 12,331.29 is: 17,031.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,309.99 : 25,288.55 = 12,331.29 : x
  2. Step 2: Convert to fraction form
    18,309.99/25,288.55 = 12,331.29/x
  3. Step 3: Cross multiply
    18,309.99x = 25,288.55 × 12,331.29
  4. Step 4: Simplify right side
    18,309.99x = 311,840,443.73
  5. Step 5: Solve for x
    x = 311,840,443.73/18,309.99
  6. Step 6: Final answer
    x = 17,031.16

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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.