Home / 16,981.62-25,425.63-12,809.00

Finding the Fourth Proportional to 16,981.62, 25,425.63 and 12,809.00

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Solution

The fourth proportional to 16,981.62, 25,425.63 and 12,809.00 is: 19,178.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,981.62 : 25,425.63 = 12,809.00 : x
  2. Step 2: Convert to fraction form
    16,981.62/25,425.63 = 12,809.00/x
  3. Step 3: Cross multiply
    16,981.62x = 25,425.63 × 12,809.00
  4. Step 4: Simplify right side
    16,981.62x = 325,676,767.54
  5. Step 5: Solve for x
    x = 325,676,767.54/16,981.62
  6. Step 6: Final answer
    x = 19,178.19

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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.