Home / 18,369.75-25,350.20-9,986.19

Finding the Fourth Proportional to 18,369.75, 25,350.20 and 9,986.19

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Solution

The fourth proportional to 18,369.75, 25,350.20 and 9,986.19 is: 13,780.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,369.75 : 25,350.20 = 9,986.19 : x
  2. Step 2: Convert to fraction form
    18,369.75/25,350.20 = 9,986.19/x
  3. Step 3: Cross multiply
    18,369.75x = 25,350.20 × 9,986.19
  4. Step 4: Simplify right side
    18,369.75x = 253,151,863.81
  5. Step 5: Solve for x
    x = 253,151,863.81/18,369.75
  6. Step 6: Final answer
    x = 13,780.91

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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.