Home / 13,539.12-20,294.10-12,918.36

Finding the Fourth Proportional to 13,539.12, 20,294.10 and 12,918.36

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Solution

The fourth proportional to 13,539.12, 20,294.10 and 12,918.36 is: 19,363.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.12 : 20,294.10 = 12,918.36 : x
  2. Step 2: Convert to fraction form
    13,539.12/20,294.10 = 12,918.36/x
  3. Step 3: Cross multiply
    13,539.12x = 20,294.10 × 12,918.36
  4. Step 4: Simplify right side
    13,539.12x = 262,166,489.68
  5. Step 5: Solve for x
    x = 262,166,489.68/13,539.12
  6. Step 6: Final answer
    x = 19,363.63

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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.