Home / 18,135.21-25,038-14,785.92

Finding the Fourth Proportional to 18,135.21, 25,038 and 14,785.92

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Solution

The fourth proportional to 18,135.21, 25,038 and 14,785.92 is: 20,413.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,135.21 : 25,038 = 14,785.92 : x
  2. Step 2: Convert to fraction form
    18,135.21/25,038 = 14,785.92/x
  3. Step 3: Cross multiply
    18,135.21x = 25,038 × 14,785.92
  4. Step 4: Simplify right side
    18,135.21x = 370,209,864.96
  5. Step 5: Solve for x
    x = 370,209,864.96/18,135.21
  6. Step 6: Final answer
    x = 20,413.87

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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.