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Finding the Fourth Proportional to 13,459.17, 20,187.17 and 3,599.21

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Solution

The fourth proportional to 13,459.17, 20,187.17 and 3,599.21 is: 5,398.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,459.17 : 20,187.17 = 3,599.21 : x
  2. Step 2: Convert to fraction form
    13,459.17/20,187.17 = 3,599.21/x
  3. Step 3: Cross multiply
    13,459.17x = 20,187.17 × 3,599.21
  4. Step 4: Simplify right side
    13,459.17x = 72,657,896.61
  5. Step 5: Solve for x
    x = 72,657,896.61/13,459.17
  6. Step 6: Final answer
    x = 5,398.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.