Home / 13,218.32-19,831.80-10,306.64

Finding the Fourth Proportional to 13,218.32, 19,831.80 and 10,306.64

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Solution

The fourth proportional to 13,218.32, 19,831.80 and 10,306.64 is: 15,463.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.32 : 19,831.80 = 10,306.64 : x
  2. Step 2: Convert to fraction form
    13,218.32/19,831.80 = 10,306.64/x
  3. Step 3: Cross multiply
    13,218.32x = 19,831.80 × 10,306.64
  4. Step 4: Simplify right side
    13,218.32x = 204,399,223.15
  5. Step 5: Solve for x
    x = 204,399,223.15/13,218.32
  6. Step 6: Final answer
    x = 15,463.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.