Home / 18,283.36-25,231-9,899.88

Finding the Fourth Proportional to 18,283.36, 25,231 and 9,899.88

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Solution

The fourth proportional to 18,283.36, 25,231 and 9,899.88 is: 13,661.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,283.36 : 25,231 = 9,899.88 : x
  2. Step 2: Convert to fraction form
    18,283.36/25,231 = 9,899.88/x
  3. Step 3: Cross multiply
    18,283.36x = 25,231 × 9,899.88
  4. Step 4: Simplify right side
    18,283.36x = 249,783,872.28
  5. Step 5: Solve for x
    x = 249,783,872.28/18,283.36
  6. Step 6: Final answer
    x = 13,661.81

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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.