Home / 39,423.71-54,406.01-21,519.68

Finding the Fourth Proportional to 39,423.71, 54,406.01 and 21,519.68

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Solution

The fourth proportional to 39,423.71, 54,406.01 and 21,519.68 is: 29,697.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,423.71 : 54,406.01 = 21,519.68 : x
  2. Step 2: Convert to fraction form
    39,423.71/54,406.01 = 21,519.68/x
  3. Step 3: Cross multiply
    39,423.71x = 54,406.01 × 21,519.68
  4. Step 4: Simplify right side
    39,423.71x = 1,170,799,707.05
  5. Step 5: Solve for x
    x = 1,170,799,707.05/39,423.71
  6. Step 6: Final answer
    x = 29,697.86

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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.