Home / 21,670.44-29,907.30-13,170.69

Finding the Fourth Proportional to 21,670.44, 29,907.30 and 13,170.69

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Solution

The fourth proportional to 21,670.44, 29,907.30 and 13,170.69 is: 18,176.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,670.44 : 29,907.30 = 13,170.69 : x
  2. Step 2: Convert to fraction form
    21,670.44/29,907.30 = 13,170.69/x
  3. Step 3: Cross multiply
    21,670.44x = 29,907.30 × 13,170.69
  4. Step 4: Simplify right side
    21,670.44x = 393,899,777.04
  5. Step 5: Solve for x
    x = 393,899,777.04/21,670.44
  6. Step 6: Final answer
    x = 18,176.82

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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.