Home / 18,811.36-25,959.28-10,427.68

Finding the Fourth Proportional to 18,811.36, 25,959.28 and 10,427.68

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Solution

The fourth proportional to 18,811.36, 25,959.28 and 10,427.68 is: 14,389.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811.36 : 25,959.28 = 10,427.68 : x
  2. Step 2: Convert to fraction form
    18,811.36/25,959.28 = 10,427.68/x
  3. Step 3: Cross multiply
    18,811.36x = 25,959.28 × 10,427.68
  4. Step 4: Simplify right side
    18,811.36x = 270,695,064.87
  5. Step 5: Solve for x
    x = 270,695,064.87/18,811.36
  6. Step 6: Final answer
    x = 14,389.98

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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.