Home / 22,122.36-30,559.82-15,404.63

Finding the Fourth Proportional to 22,122.36, 30,559.82 and 15,404.63

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Solution

The fourth proportional to 22,122.36, 30,559.82 and 15,404.63 is: 21,279.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,122.36 : 30,559.82 = 15,404.63 : x
  2. Step 2: Convert to fraction form
    22,122.36/30,559.82 = 15,404.63/x
  3. Step 3: Cross multiply
    22,122.36x = 30,559.82 × 15,404.63
  4. Step 4: Simplify right side
    22,122.36x = 470,762,490.14
  5. Step 5: Solve for x
    x = 470,762,490.14/22,122.36
  6. Step 6: Final answer
    x = 21,279.94

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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.