Home / 18,680.80-25,776.56-10,721.64

Finding the Fourth Proportional to 18,680.80, 25,776.56 and 10,721.64

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Solution

The fourth proportional to 18,680.80, 25,776.56 and 10,721.64 is: 14,794.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,680.80 : 25,776.56 = 10,721.64 : x
  2. Step 2: Convert to fraction form
    18,680.80/25,776.56 = 10,721.64/x
  3. Step 3: Cross multiply
    18,680.80x = 25,776.56 × 10,721.64
  4. Step 4: Simplify right side
    18,680.80x = 276,366,996.76
  5. Step 5: Solve for x
    x = 276,366,996.76/18,680.80
  6. Step 6: Final answer
    x = 14,794.17

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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.