Home / 12,319.74-16,988.25-11,321.01

Finding the Fourth Proportional to 12,319.74, 16,988.25 and 11,321.01

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Solution

The fourth proportional to 12,319.74, 16,988.25 and 11,321.01 is: 15,611.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,319.74 : 16,988.25 = 11,321.01 : x
  2. Step 2: Convert to fraction form
    12,319.74/16,988.25 = 11,321.01/x
  3. Step 3: Cross multiply
    12,319.74x = 16,988.25 × 11,321.01
  4. Step 4: Simplify right side
    12,319.74x = 192,324,148.13
  5. Step 5: Solve for x
    x = 192,324,148.13/12,319.74
  6. Step 6: Final answer
    x = 15,611.06

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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.