Home / 39,806.42-54,934.20-21,902.18

Finding the Fourth Proportional to 39,806.42, 54,934.20 and 21,902.18

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Solution

The fourth proportional to 39,806.42, 54,934.20 and 21,902.18 is: 30,225.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,806.42 : 54,934.20 = 21,902.18 : x
  2. Step 2: Convert to fraction form
    39,806.42/54,934.20 = 21,902.18/x
  3. Step 3: Cross multiply
    39,806.42x = 54,934.20 × 21,902.18
  4. Step 4: Simplify right side
    39,806.42x = 1,203,178,461.89
  5. Step 5: Solve for x
    x = 1,203,178,461.89/39,806.42
  6. Step 6: Final answer
    x = 30,225.74

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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.