Home / 15,623.86-21,570.99-13,942.37

Finding the Fourth Proportional to 15,623.86, 21,570.99 and 13,942.37

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Solution

The fourth proportional to 15,623.86, 21,570.99 and 13,942.37 is: 19,249.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,623.86 : 21,570.99 = 13,942.37 : x
  2. Step 2: Convert to fraction form
    15,623.86/21,570.99 = 13,942.37/x
  3. Step 3: Cross multiply
    15,623.86x = 21,570.99 × 13,942.37
  4. Step 4: Simplify right side
    15,623.86x = 300,750,654.13
  5. Step 5: Solve for x
    x = 300,750,654.13/15,623.86
  6. Step 6: Final answer
    x = 19,249.45

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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.