Home / 21,747.36-30,013.68-12,316.32

Finding the Fourth Proportional to 21,747.36, 30,013.68 and 12,316.32

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Solution

The fourth proportional to 21,747.36, 30,013.68 and 12,316.32 is: 16,997.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,747.36 : 30,013.68 = 12,316.32 : x
  2. Step 2: Convert to fraction form
    21,747.36/30,013.68 = 12,316.32/x
  3. Step 3: Cross multiply
    21,747.36x = 30,013.68 × 12,316.32
  4. Step 4: Simplify right side
    21,747.36x = 369,658,087.26
  5. Step 5: Solve for x
    x = 369,658,087.26/21,747.36
  6. Step 6: Final answer
    x = 16,997.84

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Similar ratio
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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.