Home / 13,727.81-18,944.37-7,440.18

Finding the Fourth Proportional to 13,727.81, 18,944.37 and 7,440.18

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Solution

The fourth proportional to 13,727.81, 18,944.37 and 7,440.18 is: 10,267.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,727.81 : 18,944.37 = 7,440.18 : x
  2. Step 2: Convert to fraction form
    13,727.81/18,944.37 = 7,440.18/x
  3. Step 3: Cross multiply
    13,727.81x = 18,944.37 × 7,440.18
  4. Step 4: Simplify right side
    13,727.81x = 140,949,522.79
  5. Step 5: Solve for x
    x = 140,949,522.79/13,727.81
  6. Step 6: Final answer
    x = 10,267.45

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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.