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Finding the Fourth Proportional to 13,480.68, 18,602.75 and 7,513

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Solution

The fourth proportional to 13,480.68, 18,602.75 and 7,513 is: 10,367.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480.68 : 18,602.75 = 7,513 : x
  2. Step 2: Convert to fraction form
    13,480.68/18,602.75 = 7,513/x
  3. Step 3: Cross multiply
    13,480.68x = 18,602.75 × 7,513
  4. Step 4: Simplify right side
    13,480.68x = 139,762,460.75
  5. Step 5: Solve for x
    x = 139,762,460.75/13,480.68
  6. Step 6: Final answer
    x = 10,367.61

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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.