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Finding the Fourth Proportional to 17,586.80, 26,341.80 and 13,660.40

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Solution

The fourth proportional to 17,586.80, 26,341.80 and 13,660.40 is: 20,460.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,586.80 : 26,341.80 = 13,660.40 : x
  2. Step 2: Convert to fraction form
    17,586.80/26,341.80 = 13,660.40/x
  3. Step 3: Cross multiply
    17,586.80x = 26,341.80 × 13,660.40
  4. Step 4: Simplify right side
    17,586.80x = 359,839,524.72
  5. Step 5: Solve for x
    x = 359,839,524.72/17,586.80
  6. Step 6: Final answer
    x = 20,460.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.