Home / 18,454.81-25,467.64-11,385.34

Finding the Fourth Proportional to 18,454.81, 25,467.64 and 11,385.34

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Solution

The fourth proportional to 18,454.81, 25,467.64 and 11,385.34 is: 15,711.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,454.81 : 25,467.64 = 11,385.34 : x
  2. Step 2: Convert to fraction form
    18,454.81/25,467.64 = 11,385.34/x
  3. Step 3: Cross multiply
    18,454.81x = 25,467.64 × 11,385.34
  4. Step 4: Simplify right side
    18,454.81x = 289,957,740.40
  5. Step 5: Solve for x
    x = 289,957,740.40/18,454.81
  6. Step 6: Final answer
    x = 15,711.77

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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.