Home / 13,742.06-18,960.89-7,772.42

Finding the Fourth Proportional to 13,742.06, 18,960.89 and 7,772.42

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Solution

The fourth proportional to 13,742.06, 18,960.89 and 7,772.42 is: 10,724.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.06 : 18,960.89 = 7,772.42 : x
  2. Step 2: Convert to fraction form
    13,742.06/18,960.89 = 7,772.42/x
  3. Step 3: Cross multiply
    13,742.06x = 18,960.89 × 7,772.42
  4. Step 4: Simplify right side
    13,742.06x = 147,372,009.19
  5. Step 5: Solve for x
    x = 147,372,009.19/13,742.06
  6. Step 6: Final answer
    x = 10,724.16

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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.