Home / 15,623.68-21,570.74-13,942.20

Finding the Fourth Proportional to 15,623.68, 21,570.74 and 13,942.20

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Solution

The fourth proportional to 15,623.68, 21,570.74 and 13,942.20 is: 19,249.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,623.68 : 21,570.74 = 13,942.20 : x
  2. Step 2: Convert to fraction form
    15,623.68/21,570.74 = 13,942.20/x
  3. Step 3: Cross multiply
    15,623.68x = 21,570.74 × 13,942.20
  4. Step 4: Simplify right side
    15,623.68x = 300,743,393.66
  5. Step 5: Solve for x
    x = 300,743,393.66/15,623.68
  6. Step 6: Final answer
    x = 19,249.20

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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.