Home / 39,211.20-54,111.51-21,306.42

Finding the Fourth Proportional to 39,211.20, 54,111.51 and 21,306.42

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Solution

The fourth proportional to 39,211.20, 54,111.51 and 21,306.42 is: 29,402.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,211.20 : 54,111.51 = 21,306.42 : x
  2. Step 2: Convert to fraction form
    39,211.20/54,111.51 = 21,306.42/x
  3. Step 3: Cross multiply
    39,211.20x = 54,111.51 × 21,306.42
  4. Step 4: Simplify right side
    39,211.20x = 1,152,922,558.89
  5. Step 5: Solve for x
    x = 1,152,922,558.89/39,211.20
  6. Step 6: Final answer
    x = 29,402.89

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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.