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Finding the Fourth Proportional to 13,280.30, 18,328 and 7,617.04

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Solution

The fourth proportional to 13,280.30, 18,328 and 7,617.04 is: 10,512.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.30 : 18,328 = 7,617.04 : x
  2. Step 2: Convert to fraction form
    13,280.30/18,328 = 7,617.04/x
  3. Step 3: Cross multiply
    13,280.30x = 18,328 × 7,617.04
  4. Step 4: Simplify right side
    13,280.30x = 139,605,109.12
  5. Step 5: Solve for x
    x = 139,605,109.12/13,280.30
  6. Step 6: Final answer
    x = 10,512.20

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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.