Home / 38,491.40-57,722.70-13,521.80

Finding the Fourth Proportional to 38,491.40, 57,722.70 and 13,521.80

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Solution

The fourth proportional to 38,491.40, 57,722.70 and 13,521.80 is: 20,277.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,491.40 : 57,722.70 = 13,521.80 : x
  2. Step 2: Convert to fraction form
    38,491.40/57,722.70 = 13,521.80/x
  3. Step 3: Cross multiply
    38,491.40x = 57,722.70 × 13,521.80
  4. Step 4: Simplify right side
    38,491.40x = 780,514,804.86
  5. Step 5: Solve for x
    x = 780,514,804.86/38,491.40
  6. Step 6: Final answer
    x = 20,277.64

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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.