Home / 18,445.11-25,446.74-12,859.35

Finding the Fourth Proportional to 18,445.11, 25,446.74 and 12,859.35

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Solution

The fourth proportional to 18,445.11, 25,446.74 and 12,859.35 is: 17,740.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,445.11 : 25,446.74 = 12,859.35 : x
  2. Step 2: Convert to fraction form
    18,445.11/25,446.74 = 12,859.35/x
  3. Step 3: Cross multiply
    18,445.11x = 25,446.74 × 12,859.35
  4. Step 4: Simplify right side
    18,445.11x = 327,228,471.72
  5. Step 5: Solve for x
    x = 327,228,471.72/18,445.11
  6. Step 6: Final answer
    x = 17,740.66

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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.