Home / 18,720.12-25,831.44-10,336.56

Finding the Fourth Proportional to 18,720.12, 25,831.44 and 10,336.56

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Solution

The fourth proportional to 18,720.12, 25,831.44 and 10,336.56 is: 14,263.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720.12 : 25,831.44 = 10,336.56 : x
  2. Step 2: Convert to fraction form
    18,720.12/25,831.44 = 10,336.56/x
  3. Step 3: Cross multiply
    18,720.12x = 25,831.44 × 10,336.56
  4. Step 4: Simplify right side
    18,720.12x = 267,008,229.45
  5. Step 5: Solve for x
    x = 267,008,229.45/18,720.12
  6. Step 6: Final answer
    x = 14,263.17

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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.