Home / 22,195.79-30,630.18-12,764.34

Finding the Fourth Proportional to 22,195.79, 30,630.18 and 12,764.34

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Solution

The fourth proportional to 22,195.79, 30,630.18 and 12,764.34 is: 17,614.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,195.79 : 30,630.18 = 12,764.34 : x
  2. Step 2: Convert to fraction form
    22,195.79/30,630.18 = 12,764.34/x
  3. Step 3: Cross multiply
    22,195.79x = 30,630.18 × 12,764.34
  4. Step 4: Simplify right side
    22,195.79x = 390,974,031.78
  5. Step 5: Solve for x
    x = 390,974,031.78/22,195.79
  6. Step 6: Final answer
    x = 17,614.79

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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.