Home / 13,281.54-18,328.73-7,617.21

Finding the Fourth Proportional to 13,281.54, 18,328.73 and 7,617.21

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Solution

The fourth proportional to 13,281.54, 18,328.73 and 7,617.21 is: 10,511.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.54 : 18,328.73 = 7,617.21 : x
  2. Step 2: Convert to fraction form
    13,281.54/18,328.73 = 7,617.21/x
  3. Step 3: Cross multiply
    13,281.54x = 18,328.73 × 7,617.21
  4. Step 4: Simplify right side
    13,281.54x = 139,613,785.44
  5. Step 5: Solve for x
    x = 139,613,785.44/13,281.54
  6. Step 6: Final answer
    x = 10,511.87

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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.