Home / 13,488.67-18,615.17-7,520.33

Finding the Fourth Proportional to 13,488.67, 18,615.17 and 7,520.33

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Solution

The fourth proportional to 13,488.67, 18,615.17 and 7,520.33 is: 10,378.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,488.67 : 18,615.17 = 7,520.33 : x
  2. Step 2: Convert to fraction form
    13,488.67/18,615.17 = 7,520.33/x
  3. Step 3: Cross multiply
    13,488.67x = 18,615.17 × 7,520.33
  4. Step 4: Simplify right side
    13,488.67x = 139,992,221.41
  5. Step 5: Solve for x
    x = 139,992,221.41/13,488.67
  6. Step 6: Final answer
    x = 10,378.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.