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Finding the Fourth Proportional to 13,483.40, 18,602.97 and 7,817.02

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Solution

The fourth proportional to 13,483.40, 18,602.97 and 7,817.02 is: 10,785.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,483.40 : 18,602.97 = 7,817.02 : x
  2. Step 2: Convert to fraction form
    13,483.40/18,602.97 = 7,817.02/x
  3. Step 3: Cross multiply
    13,483.40x = 18,602.97 × 7,817.02
  4. Step 4: Simplify right side
    13,483.40x = 145,419,775.53
  5. Step 5: Solve for x
    x = 145,419,775.53/13,483.40
  6. Step 6: Final answer
    x = 10,785.10

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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.