Home / 13,727.90-18,943.99-7,440.14

Finding the Fourth Proportional to 13,727.90, 18,943.99 and 7,440.14

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Solution

The fourth proportional to 13,727.90, 18,943.99 and 7,440.14 is: 10,267.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,727.90 : 18,943.99 = 7,440.14 : x
  2. Step 2: Convert to fraction form
    13,727.90/18,943.99 = 7,440.14/x
  3. Step 3: Cross multiply
    13,727.90x = 18,943.99 × 7,440.14
  4. Step 4: Simplify right side
    13,727.90x = 140,945,805.84
  5. Step 5: Solve for x
    x = 140,945,805.84/13,727.90
  6. Step 6: Final answer
    x = 10,267.11

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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.