Home / 13,186.13-18,196.85-9,831.81

Finding the Fourth Proportional to 13,186.13, 18,196.85 and 9,831.81

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Solution

The fourth proportional to 13,186.13, 18,196.85 and 9,831.81 is: 13,567.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.13 : 18,196.85 = 9,831.81 : x
  2. Step 2: Convert to fraction form
    13,186.13/18,196.85 = 9,831.81/x
  3. Step 3: Cross multiply
    13,186.13x = 18,196.85 × 9,831.81
  4. Step 4: Simplify right side
    13,186.13x = 178,908,064.62
  5. Step 5: Solve for x
    x = 178,908,064.62/13,186.13
  6. Step 6: Final answer
    x = 13,567.90

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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.