Home / 15,623.61-21,570.63-13,942.12

Finding the Fourth Proportional to 15,623.61, 21,570.63 and 13,942.12

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Solution

The fourth proportional to 15,623.61, 21,570.63 and 13,942.12 is: 19,249.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,623.61 : 21,570.63 = 13,942.12 : x
  2. Step 2: Convert to fraction form
    15,623.61/21,570.63 = 13,942.12/x
  3. Step 3: Cross multiply
    15,623.61x = 21,570.63 × 13,942.12
  4. Step 4: Simplify right side
    15,623.61x = 300,740,311.94
  5. Step 5: Solve for x
    x = 300,740,311.94/15,623.61
  6. Step 6: Final answer
    x = 19,249.09

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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.