Home / 18,786.86-25,925.55-10,403.18

Finding the Fourth Proportional to 18,786.86, 25,925.55 and 10,403.18

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Solution

The fourth proportional to 18,786.86, 25,925.55 and 10,403.18 is: 14,356.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.86 : 25,925.55 = 10,403.18 : x
  2. Step 2: Convert to fraction form
    18,786.86/25,925.55 = 10,403.18/x
  3. Step 3: Cross multiply
    18,786.86x = 25,925.55 × 10,403.18
  4. Step 4: Simplify right side
    18,786.86x = 269,708,163.25
  5. Step 5: Solve for x
    x = 269,708,163.25/18,786.86
  6. Step 6: Final answer
    x = 14,356.21

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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.