Home / 13,727.84-18,943.28-7,759.20

Finding the Fourth Proportional to 13,727.84, 18,943.28 and 7,759.20

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Solution

The fourth proportional to 13,727.84, 18,943.28 and 7,759.20 is: 10,707.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,727.84 : 18,943.28 = 7,759.20 : x
  2. Step 2: Convert to fraction form
    13,727.84/18,943.28 = 7,759.20/x
  3. Step 3: Cross multiply
    13,727.84x = 18,943.28 × 7,759.20
  4. Step 4: Simplify right side
    13,727.84x = 146,984,698.18
  5. Step 5: Solve for x
    x = 146,984,698.18/13,727.84
  6. Step 6: Final answer
    x = 10,707.05

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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.