Home / 13,742.04-18,963.96-7,773.72

Finding the Fourth Proportional to 13,742.04, 18,963.96 and 7,773.72

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Solution

The fourth proportional to 13,742.04, 18,963.96 and 7,773.72 is: 10,727.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.04 : 18,963.96 = 7,773.72 : x
  2. Step 2: Convert to fraction form
    13,742.04/18,963.96 = 7,773.72/x
  3. Step 3: Cross multiply
    13,742.04x = 18,963.96 × 7,773.72
  4. Step 4: Simplify right side
    13,742.04x = 147,420,515.13
  5. Step 5: Solve for x
    x = 147,420,515.13/13,742.04
  6. Step 6: Final answer
    x = 10,727.70

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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.