Home / 18,686.86-25,899.19-18,336.94

Finding the Fourth Proportional to 18,686.86, 25,899.19 and 18,336.94

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Solution

The fourth proportional to 18,686.86, 25,899.19 and 18,336.94 is: 25,414.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.86 : 25,899.19 = 18,336.94 : x
  2. Step 2: Convert to fraction form
    18,686.86/25,899.19 = 18,336.94/x
  3. Step 3: Cross multiply
    18,686.86x = 25,899.19 × 18,336.94
  4. Step 4: Simplify right side
    18,686.86x = 474,911,801.39
  5. Step 5: Solve for x
    x = 474,911,801.39/18,686.86
  6. Step 6: Final answer
    x = 25,414.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.