Home / 18,431.07-27,622.70-10,521.42

Finding the Fourth Proportional to 18,431.07, 27,622.70 and 10,521.42

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Solution

The fourth proportional to 18,431.07, 27,622.70 and 10,521.42 is: 15,768.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,431.07 : 27,622.70 = 10,521.42 : x
  2. Step 2: Convert to fraction form
    18,431.07/27,622.70 = 10,521.42/x
  3. Step 3: Cross multiply
    18,431.07x = 27,622.70 × 10,521.42
  4. Step 4: Simplify right side
    18,431.07x = 290,630,054.54
  5. Step 5: Solve for x
    x = 290,630,054.54/18,431.07
  6. Step 6: Final answer
    x = 15,768.49

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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.