Home / 21,747.78-30,010.77-12,316.14

Finding the Fourth Proportional to 21,747.78, 30,010.77 and 12,316.14

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Solution

The fourth proportional to 21,747.78, 30,010.77 and 12,316.14 is: 16,995.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,747.78 : 30,010.77 = 12,316.14 : x
  2. Step 2: Convert to fraction form
    21,747.78/30,010.77 = 12,316.14/x
  3. Step 3: Cross multiply
    21,747.78x = 30,010.77 × 12,316.14
  4. Step 4: Simplify right side
    21,747.78x = 369,616,844.83
  5. Step 5: Solve for x
    x = 369,616,844.83/21,747.78
  6. Step 6: Final answer
    x = 16,995.61

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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.