Home / 39,518.89-54,535.30-21,613.84

Finding the Fourth Proportional to 39,518.89, 54,535.30 and 21,613.84

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Solution

The fourth proportional to 39,518.89, 54,535.30 and 21,613.84 is: 29,826.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,518.89 : 54,535.30 = 21,613.84 : x
  2. Step 2: Convert to fraction form
    39,518.89/54,535.30 = 21,613.84/x
  3. Step 3: Cross multiply
    39,518.89x = 54,535.30 × 21,613.84
  4. Step 4: Simplify right side
    39,518.89x = 1,178,717,248.55
  5. Step 5: Solve for x
    x = 1,178,717,248.55/39,518.89
  6. Step 6: Final answer
    x = 29,826.68

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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.