Home / 22,920.45-34,390.20-21,081.35

Finding the Fourth Proportional to 22,920.45, 34,390.20 and 21,081.35

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Solution

The fourth proportional to 22,920.45, 34,390.20 and 21,081.35 is: 31,630.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,920.45 : 34,390.20 = 21,081.35 : x
  2. Step 2: Convert to fraction form
    22,920.45/34,390.20 = 21,081.35/x
  3. Step 3: Cross multiply
    22,920.45x = 34,390.20 × 21,081.35
  4. Step 4: Simplify right side
    22,920.45x = 724,991,670.82
  5. Step 5: Solve for x
    x = 724,991,670.82/22,920.45
  6. Step 6: Final answer
    x = 31,630.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.