Home / 17,981.80-26,961.03-8,621.59

Finding the Fourth Proportional to 17,981.80, 26,961.03 and 8,621.59

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Solution

The fourth proportional to 17,981.80, 26,961.03 and 8,621.59 is: 12,926.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,981.80 : 26,961.03 = 8,621.59 : x
  2. Step 2: Convert to fraction form
    17,981.80/26,961.03 = 8,621.59/x
  3. Step 3: Cross multiply
    17,981.80x = 26,961.03 × 8,621.59
  4. Step 4: Simplify right side
    17,981.80x = 232,446,946.64
  5. Step 5: Solve for x
    x = 232,446,946.64/17,981.80
  6. Step 6: Final answer
    x = 12,926.79

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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.