Home / 18,105.36-27,139.59-16,509.21

Finding the Fourth Proportional to 18,105.36, 27,139.59 and 16,509.21

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Solution

The fourth proportional to 18,105.36, 27,139.59 and 16,509.21 is: 24,746.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,105.36 : 27,139.59 = 16,509.21 : x
  2. Step 2: Convert to fraction form
    18,105.36/27,139.59 = 16,509.21/x
  3. Step 3: Cross multiply
    18,105.36x = 27,139.59 × 16,509.21
  4. Step 4: Simplify right side
    18,105.36x = 448,053,088.85
  5. Step 5: Solve for x
    x = 448,053,088.85/18,105.36
  6. Step 6: Final answer
    x = 24,746.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.