Home / 39,785.68-59,679.20-13,491.10

Finding the Fourth Proportional to 39,785.68, 59,679.20 and 13,491.10

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Solution

The fourth proportional to 39,785.68, 59,679.20 and 13,491.10 is: 20,236.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,785.68 : 59,679.20 = 13,491.10 : x
  2. Step 2: Convert to fraction form
    39,785.68/59,679.20 = 13,491.10/x
  3. Step 3: Cross multiply
    39,785.68x = 59,679.20 × 13,491.10
  4. Step 4: Simplify right side
    39,785.68x = 805,137,939.65
  5. Step 5: Solve for x
    x = 805,137,939.65/39,785.68
  6. Step 6: Final answer
    x = 20,236.88

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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.