Home / 20,220.84-30,306.56-9,124.65

Finding the Fourth Proportional to 20,220.84, 30,306.56 and 9,124.65

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Solution

The fourth proportional to 20,220.84, 30,306.56 and 9,124.65 is: 13,675.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.84 : 30,306.56 = 9,124.65 : x
  2. Step 2: Convert to fraction form
    20,220.84/30,306.56 = 9,124.65/x
  3. Step 3: Cross multiply
    20,220.84x = 30,306.56 × 9,124.65
  4. Step 4: Simplify right side
    20,220.84x = 276,536,707.08
  5. Step 5: Solve for x
    x = 276,536,707.08/20,220.84
  6. Step 6: Final answer
    x = 13,675.83

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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.