Home / 18,680.07-27,988.96-15,358.56

Finding the Fourth Proportional to 18,680.07, 27,988.96 and 15,358.56

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Solution

The fourth proportional to 18,680.07, 27,988.96 and 15,358.56 is: 23,012.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,680.07 : 27,988.96 = 15,358.56 : x
  2. Step 2: Convert to fraction form
    18,680.07/27,988.96 = 15,358.56/x
  3. Step 3: Cross multiply
    18,680.07x = 27,988.96 × 15,358.56
  4. Step 4: Simplify right side
    18,680.07x = 429,870,164.38
  5. Step 5: Solve for x
    x = 429,870,164.38/18,680.07
  6. Step 6: Final answer
    x = 23,012.24

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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.