Home / 12,923.66-17,821.53-12,170.25

Finding the Fourth Proportional to 12,923.66, 17,821.53 and 12,170.25

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Solution

The fourth proportional to 12,923.66, 17,821.53 and 12,170.25 is: 16,782.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,923.66 : 17,821.53 = 12,170.25 : x
  2. Step 2: Convert to fraction form
    12,923.66/17,821.53 = 12,170.25/x
  3. Step 3: Cross multiply
    12,923.66x = 17,821.53 × 12,170.25
  4. Step 4: Simplify right side
    12,923.66x = 216,892,475.48
  5. Step 5: Solve for x
    x = 216,892,475.48/12,923.66
  6. Step 6: Final answer
    x = 16,782.59

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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.