Home / 22,239.78-30,693.38-12,808.14

Finding the Fourth Proportional to 22,239.78, 30,693.38 and 12,808.14

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Solution

The fourth proportional to 22,239.78, 30,693.38 and 12,808.14 is: 17,676.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,239.78 : 30,693.38 = 12,808.14 : x
  2. Step 2: Convert to fraction form
    22,239.78/30,693.38 = 12,808.14/x
  3. Step 3: Cross multiply
    22,239.78x = 30,693.38 × 12,808.14
  4. Step 4: Simplify right side
    22,239.78x = 393,125,108.11
  5. Step 5: Solve for x
    x = 393,125,108.11/22,239.78
  6. Step 6: Final answer
    x = 17,676.66

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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.