Home / 13,491.78-20,225.42-4,721.91

Finding the Fourth Proportional to 13,491.78, 20,225.42 and 4,721.91

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Solution

The fourth proportional to 13,491.78, 20,225.42 and 4,721.91 is: 7,078.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,491.78 : 20,225.42 = 4,721.91 : x
  2. Step 2: Convert to fraction form
    13,491.78/20,225.42 = 4,721.91/x
  3. Step 3: Cross multiply
    13,491.78x = 20,225.42 × 4,721.91
  4. Step 4: Simplify right side
    13,491.78x = 95,502,658.25
  5. Step 5: Solve for x
    x = 95,502,658.25/13,491.78
  6. Step 6: Final answer
    x = 7,078.58

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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.