Home / 30,120.50-41,565.66-16,691.72

Finding the Fourth Proportional to 30,120.50, 41,565.66 and 16,691.72

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Solution

The fourth proportional to 30,120.50, 41,565.66 and 16,691.72 is: 23,034.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,120.50 : 41,565.66 = 16,691.72 : x
  2. Step 2: Convert to fraction form
    30,120.50/41,565.66 = 16,691.72/x
  3. Step 3: Cross multiply
    30,120.50x = 41,565.66 × 16,691.72
  4. Step 4: Simplify right side
    30,120.50x = 693,802,358.34
  5. Step 5: Solve for x
    x = 693,802,358.34/30,120.50
  6. Step 6: Final answer
    x = 23,034.22

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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.