Home / 13,281.80-19,925.12-5,491.22

Finding the Fourth Proportional to 13,281.80, 19,925.12 and 5,491.22

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Solution

The fourth proportional to 13,281.80, 19,925.12 and 5,491.22 is: 8,237.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.80 : 19,925.12 = 5,491.22 : x
  2. Step 2: Convert to fraction form
    13,281.80/19,925.12 = 5,491.22/x
  3. Step 3: Cross multiply
    13,281.80x = 19,925.12 × 5,491.22
  4. Step 4: Simplify right side
    13,281.80x = 109,413,131.55
  5. Step 5: Solve for x
    x = 109,413,131.55/13,281.80
  6. Step 6: Final answer
    x = 8,237.83

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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.