Home / 18,205.16-25,130.88-12,240.28

Finding the Fourth Proportional to 18,205.16, 25,130.88 and 12,240.28

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Solution

The fourth proportional to 18,205.16, 25,130.88 and 12,240.28 is: 16,896.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,205.16 : 25,130.88 = 12,240.28 : x
  2. Step 2: Convert to fraction form
    18,205.16/25,130.88 = 12,240.28/x
  3. Step 3: Cross multiply
    18,205.16x = 25,130.88 × 12,240.28
  4. Step 4: Simplify right side
    18,205.16x = 307,609,073.69
  5. Step 5: Solve for x
    x = 307,609,073.69/18,205.16
  6. Step 6: Final answer
    x = 16,896.81

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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.