Home / 22,219.78-30,663.36-12,148.34

Finding the Fourth Proportional to 22,219.78, 30,663.36 and 12,148.34

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Solution

The fourth proportional to 22,219.78, 30,663.36 and 12,148.34 is: 16,764.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,219.78 : 30,663.36 = 12,148.34 : x
  2. Step 2: Convert to fraction form
    22,219.78/30,663.36 = 12,148.34/x
  3. Step 3: Cross multiply
    22,219.78x = 30,663.36 × 12,148.34
  4. Step 4: Simplify right side
    22,219.78x = 372,508,922.82
  5. Step 5: Solve for x
    x = 372,508,922.82/22,219.78
  6. Step 6: Final answer
    x = 16,764.74

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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.