Home / 18,391.12-25,378.31-10,434.69

Finding the Fourth Proportional to 18,391.12, 25,378.31 and 10,434.69

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Solution

The fourth proportional to 18,391.12, 25,378.31 and 10,434.69 is: 14,399.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,391.12 : 25,378.31 = 10,434.69 : x
  2. Step 2: Convert to fraction form
    18,391.12/25,378.31 = 10,434.69/x
  3. Step 3: Cross multiply
    18,391.12x = 25,378.31 × 10,434.69
  4. Step 4: Simplify right side
    18,391.12x = 264,814,823.66
  5. Step 5: Solve for x
    x = 264,814,823.66/18,391.12
  6. Step 6: Final answer
    x = 14,399.06

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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.