Home / 13,668.93-20,491.09-4,901.78

Finding the Fourth Proportional to 13,668.93, 20,491.09 and 4,901.78

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Solution

The fourth proportional to 13,668.93, 20,491.09 and 4,901.78 is: 7,348.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,668.93 : 20,491.09 = 4,901.78 : x
  2. Step 2: Convert to fraction form
    13,668.93/20,491.09 = 4,901.78/x
  3. Step 3: Cross multiply
    13,668.93x = 20,491.09 × 4,901.78
  4. Step 4: Simplify right side
    13,668.93x = 100,442,854.11
  5. Step 5: Solve for x
    x = 100,442,854.11/13,668.93
  6. Step 6: Final answer
    x = 7,348.26

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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.