Home / 18,139.28-25,025.04-11,053.40

Finding the Fourth Proportional to 18,139.28, 25,025.04 and 11,053.40

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Solution

The fourth proportional to 18,139.28, 25,025.04 and 11,053.40 is: 15,249.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.28 : 25,025.04 = 11,053.40 : x
  2. Step 2: Convert to fraction form
    18,139.28/25,025.04 = 11,053.40/x
  3. Step 3: Cross multiply
    18,139.28x = 25,025.04 × 11,053.40
  4. Step 4: Simplify right side
    18,139.28x = 276,611,777.14
  5. Step 5: Solve for x
    x = 276,611,777.14/18,139.28
  6. Step 6: Final answer
    x = 15,249.33

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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.